Penny and Leonard defined chemistry on "The Big Bang Theory." For this list, we’ll be looking at the most heart-melting, entertaining, or hilarious times Lenny proved they were #CoupleGoals.
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00:00 I love you.
00:02 I love you too.
00:04 Don't worry officer, they just love each other.
00:09 Welcome to Ms Mojo and today we're counting down our picks for the top 20 Penny and Leonard moments on The Big Bang Theory.
00:17 Okay, okay, that's enough.
00:19 Call me.
00:23 Right.
00:25 Well, okay, goodnight.
00:28 For this list, we'll be looking at the most heart-melting, entertaining or hilarious times Lenny proved they were #couplegoals.
00:36 We're including moments from their relationship, but we're also expanding our scope to any interaction, so times they weren't romantically involved count.
00:45 Plot points will be discussed, so beware of spoilers ahead.
00:49 Do you think Lenny is the proton to each other's electrons? Let us know in the comments.
00:55 Number 20, seducing Leonard.
00:58 In season 12, Penny's ex-boyfriend, Zach, and his wife, Marissa, ask Leonard to be their sperm donor.
01:04 Leonard's on board, but Penny isn't.
01:06 And we don't find it weird at all.
01:08 It's a little weird for us too. I mean, instead of our baby looking like Zach, it's gonna look like Leonard.
01:15 Or Penny if it's a girl.
01:17 In fact, she's so not on board that she'll do anything to sabotage the arrangement. And let's just say, get Leonard to spend his donation.
01:25 As the couple gets ready for bed, she reveals some unconventional sleepwear and tries to seduce him with a comic book.
01:33 Penny, I know what you're doing. Please stop.
01:35 Ooh, listen to this. Bam. Pow. Take that, Batman.
01:42 It's hilariously sneaky, but ultimately forces both to reflect on their disagreement.
01:47 Seeing Leonard stand up for Penny later on is incredibly sweet.
01:51 I want you to back off. If Penny and I don't have kids, that's between us. So you need to stay out of it.
01:58 Their reconciliation is just as touching.
02:01 Number 19, Penny gets Leonard to graduation.
02:05 High school was a tough time for much of the gang, so Leonard's super excited when he's invited back to his old stomping ground to give a graduation commencement address as a now successful physicist.
02:16 I thought it'd be fun to show her my old stomping grounds. I even know the exact spot where they used to stomp me.
02:22 Now you get to go back as a successful scientist.
02:26 With a beautiful girl on your arm.
02:28 Unfortunately, bad weather grounds the trip, leaving him highly disappointed, but not for long. Penny pulls out all the stops to make sure Leonard gets his big moment.
02:37 She convinces the school to let him deliver his speech remotely and even finds him a graduation outfit.
02:43 Cap and gown? Why do I need a cap and gown?
02:45 Because you are giving your commencement speech.
02:48 What are you talking about?
02:49 I called your old high school and convinced them to let you give your speech over Skype.
02:53 Okay, it came from a costume shop, but it works. Ultimately, everything comes together.
02:58 Leonard delivers a memorable speech while Penny sits beside him, mostly beaming with pride.
03:03 What you're really doing is becoming interesting.
03:07 And when people finally do notice you, they're going to find someone a lot cooler than they thought.
03:13 These two always show up for each other and it makes our hearts melt.
03:17 Number 18, the beta test.
03:20 In the 100th episode, Leonard daydreams about getting back together with Penny.
03:24 Penny, do you have plans for dinner?
03:26 Why, are you guys going somewhere?
03:27 No, I mean just you and me.
03:29 Ooooooh.
03:32 Have you thought this through?
03:35 Yes, and I think we should go anyway.
03:38 When fantasy becomes a reality, he comes up with a plan to avoid future relationship roadblocks.
03:43 However, he and Penny quickly learn that software development protocols don't really work on human beings.
03:48 It's color coded.
03:51 Red means fix right away.
03:55 Yellow is, eh, whenever you get a chance.
03:59 And green is, I could probably learn to live with it.
04:02 And neither is left feeling too hot about themselves.
04:05 Yeah, handing someone a list of their flaws or bugs will do that,
04:09 but it was probably a better way to get on the same page than secretly reading Penny's journal.
04:15 Interesting, I never told you that.
04:17 Sure you did.
04:18 No, I never told anyone that.
04:20 But I did write it in my journal.
04:22 While the test marks a roadblock in their journey, everything eventually works out,
04:26 because flaws or not, they love each other.
04:29 Number 17, Money Talks.
04:32 As the series progresses and Penny makes new life choices,
04:35 the financial power balance in the relationship shifts.
04:38 Eventually, she out-earns her husband, a fact he's astounded to learn.
04:42 I'm excited that you found this new job where you're making decent money.
04:44 Decent? I make twice what you make.
04:46 Wait, twice?
04:48 Yeah.
04:50 Like, times two twice?
04:53 A podcast might not be ideal for discussing personal finances, but it's hilarious.
04:58 They also try asking their friends, who are in a similar situation, for advice at another point.
05:03 I mean, it could be a little awkward since I make so much more money than Howie.
05:07 You didn't have to say so much more.
05:10 Well, I didn't have to, but for the sake of accuracy, I felt that I should.
05:13 Yet the only thing they learn is that they're not the only couple who fights over money.
05:18 Later on in the series, Penny's hurt to discover that Leonard still thinks of her as financially irresponsible.
05:24 You realize I make more money than you.
05:26 I know, but this isn't a big deal. It's just a little savings I put aside.
05:30 We're married. We're supposed to share everything.
05:33 You mean like your massive credit card debt?
05:35 It's a low moment for the couple.
05:37 However, it proves they can work through anything and come out stronger.
05:41 Number 16, the relationship agreement.
05:44 Many seasons and misadventures later, the spark fizzles for this now married couple,
05:50 and weirdly, they turn to Sheldon to reignite the flame.
05:53 Would you please help us make a relationship agreement?
05:55 Sheldon's contracts have always been a running gag throughout the series,
06:01 but suddenly it doesn't seem too funny when Leonard and Penny realize that having one might save their relationship.
06:07 Sheldon is thrilled and soon presents them with a relationship agreement that includes Penny not saying everything is fine when it's not,
06:15 and Leonard limiting his video gaming in underpants hours to when Penny isn't home.
06:20 This includes boxers, briefs, thongs, g-strings, or anything else that calls attention to his pasty little thighs.
06:26 Who says romance can't be structured?
06:29 Number 15, Penny knows breast.
06:32 Remember when Leonard gets so excited about Penny going back to school?
06:36 Why wait so long to tell me?
06:37 I just, I don't want you to make a big deal out of it.
06:39 Why do you think I'd be like that? I get it, you're taking one class, it's nice.
06:43 Maybe if it goes well you take another, you enroll full time.
06:45 Yeah, that fades when one of his mum's books shows up on the recommended reading list for her psych class.
06:51 It's not really how anyone would want their other half to find out about their darkest and most embarrassing moments.
06:57 It doesn't help that Penny keeps probing either.
07:00 The makeup was green, I was pretending to be the Hulk.
07:03 You were wearing her bra.
07:05 That was to keep my muscles from sagging, can we please stop talking about this?
07:08 However, he soon spots a trend emerge whenever he gets sad about rehashing the past, and uses it to his advantage.
07:14 His mistake is telling Howard.
07:16 I'm copying Leonard, when he does this to Penny they have sex and watch Monty Python.
07:20 In perhaps the highlight of the episode, Penny gets the ultimate payback.
07:24 It's as hilarious as it is savage.
07:26 I understand you have been whining about my parenting in order to emotionally manipulate your girlfriend.
07:32 I, uh...
07:34 Bernadette told me everything. Now you don't get the left or the right.
07:37 But hey, he deserved it, and this dynamic is part of what makes the pair so fun.
07:42 Number 14, drinking away their blues.
07:45 When Leonard's mum comes to visit, it's not long until her cold analytical psychoanalysis gets into everyone's heads.
07:52 Especially Penny's.
07:53 I talked to her for five minutes yesterday and I've been half bombed ever since.
07:57 You can't let her get into your head.
08:00 My head, what about yours?
08:02 It's too late for me. My head is her summer house.
08:05 Leonard joins her in drinking their misery away, and it doesn't take long for them to get hammered.
08:10 With their inhibitions lost somewhere at the bottom of a bottle, their interactions become more flirty.
08:15 Okay, shot lime.
08:16 Right.
08:17 Da!
08:23 Where's the lime?
08:25 Eventually, they're straight up making out.
08:30 Leonard spends a lot of time dreaming about getting intimate with the girl next door,
08:34 and it seems like his dreams are about to come true.
08:37 But, trust him to put his foot in it.
08:39 Well, she did tell him to stop talking.
08:42 Get out!
08:43 She said shush, I should have shushed.
08:51 Number 13, hanging out as just friends.
08:54 As heartbroken as we were when Penny broke up with Leonard, we were delighted to hear them reaffirm their friendship in the following episode.
09:01 Be friends, you and me.
09:04 Oh, sure, absolutely.
09:08 Good, I'm glad.
09:11 A couple of seasons later, we got to really see their new dynamic in action, and it was priceless.
09:16 Penny learns that Leonard made a lot of allowances during their relationship,
09:20 but now that they're no longer dating, there's nothing stopping him from doing precisely what he wants.
09:25 Alright, I'd like an order of fries.
09:26 Great, that'll be $5.
09:28 I am having the best time.
09:33 I'm so glad you suggested we do this.
09:36 Meanwhile, he ends up being the third wheel when she hits it off with a stranger before he meets Laura.
09:41 Ultimately, a big fight brings the night out to an abrupt end.
09:45 Take me home.
09:46 Maybe I'm not done hanging out with you.
09:50 You're right, it's getting late.
09:53 Hey, it's a little chaotic.
09:55 We can't deny we enjoyed this era of their relationship.
09:58 Up until the last part, I was kind of enjoying take charge Leonard with a little backbone.
10:03 Picking the movie, knowing what he wants, a little cocky.
10:06 Really?
10:07 Yeah.
10:08 Number 12, prom.
10:10 When Bernadette and Amy find Penny's prom dress, they're inspired to have a prom do-over.
10:16 Minus the drama.
10:17 Penny and Leonard are the first to arrive and manage to make the night extra special without their friends or music
10:23 in a moment that is arguably one of the show's most moving.
10:26 Look at me, dancing with the prettiest girl at the prom.
10:30 They acknowledge that they never would have gone to prom together back in high school, but hey,
10:34 what they have now has clearly been worth the wait.
10:37 Their relationship is a testament to how much they've both matured.
10:40 They get to do all the best bits of prom without the drama, while showing us how perfect they are together.
10:46 Number 11, Penny visits Leonard's lab.
10:49 Penny stops by Leonard's lab after Bernadette suggests she become more involved in learning about his work.
10:55 It's a courtesy visit at first, but she soon becomes engrossed.
10:59 And we're not sure if someone was pointing a laser at her because things rapidly heat up.
11:05 You should visit more often.
11:09 What are you doing?
11:14 Take off your clothes.
11:17 Who knew Penny had a thing for smart guys?
11:20 During another visit, she's majorly impressed by some powerful magnets that can override gravity.
11:25 But what I really am is a very smart scientist who understands the mechanics of the universe
11:30 and is wearing the sexy black underwear you bought him.
11:32 There we go.
11:33 The pair also sees positive results outside his work environment when Leonard gives her a rundown on the theory of relativity,
11:40 more than once.
11:41 With a little extra effort on both sides, their physical and mental bonds are as strong as those gravity-defying magnets.
11:48 Nothing to see here. Just sexy police business.
11:51 Just explaining the theory of relativity.
11:55 Number 10, Penny and Leonard are expecting.
11:59 Earlier in season 12, Penny revealed she didn't want any kids.
12:03 What if we didn't have kids?
12:05 Ever?
12:07 I mean, our life is so great. Why would we want to change that?
12:09 And she seemed pretty sure.
12:11 So none of us expected her to announce her pregnancy in the series finale.
12:15 Someone's gonna figure it out. Why don't we just tell people?
12:17 No, it's too early. I haven't even wrapped my head around it.
12:19 I have. My head is wrapped.
12:21 Yeah, well, if something else had been wrapped, we wouldn't be in this situation.
12:24 While it's clear she's entering this new phase with some trepidation,
12:28 she seems to be greeting the unexpected left turn in their lives positively.
12:32 The team behind the show explained that since Lenny was the original central couple of the series,
12:37 this was their way of honouring that relationship.
12:40 It was also a beautiful way to bring things full circle.
12:44 After all, remember what Leonard told Sheldon in the pilot episode?
12:47 Our babies will be smart and beautiful.
12:49 Number 9, the first time they meet.
12:53 As far as meet-cutes go, this one is, well, awkward.
12:57 Leonard and Sheldon have just come home to discover their new neighbour.
13:01 Oh, hi.
13:02 Hi.
13:03 Hi.
13:04 Hi.
13:05 Hi.
13:06 Hi.
13:07 The introduction is definitely cringe-worthy as Leonard struggles to make conversation.
13:11 Thankfully, Penny eventually manages to pass meaning from his verbal diarrhoea
13:16 and understands that he's inviting her over for lunch.
13:19 Leonard is an experimental physicist at Caltech,
13:22 and Penny is a Sagittarius vegetarian who loves steak.
13:25 While Sheldon is wholly underwhelmed by her charms, Leonard hangs on to her every word.
13:31 The whole encounter is hilarious and reminds us just how far these two have come since first meeting.
13:37 Number 8, a romantic kiss.
13:39 Sheldon plays Cupid once again when Penny and Leonard get cold feet ahead of their first date.
13:44 They're both nervous because the other isn't the kind of person either one of them would normally go out with.
13:49 Your potential relationship with Leonard right now can be thought of as both good and bad.
13:54 Sheldon proves to be surprisingly helpful on this matter by telling them both
13:57 to compare their relationship's potential to Schrodinger's cat.
14:01 Thanks to Sheldon, Schrodinger and his cat, Penny decides to test out this theory before she heads out with Leonard.
14:07 She kisses him, and wouldn't you know it, she discovers that the cat is very much alive.
14:11 Alright, the cat's alive. Let's go to dinner.
14:13 This is romance the way that only the Big Bang Theory can tell it.
14:17 Number 7, Valentine's Day.
14:19 Fancy dinner turns into burgers in the car when Leonard and Penny ditch their Valentine's Day plans
14:24 after the maitre d' makes Penny feel old.
14:27 They spend the rest of the night trying to prove that they're still young and fun,
14:30 but dismiss plans to go dancing or skinny dipping.
14:33 In a final attempt to prove their best days are not yet behind them,
14:37 they burst into the apartment dressed as Cupid and throw confetti.
14:40 We are young and fun!
14:43 While this may prove that their respective inner children are indeed alive, we don't envy the clean up.
14:49 Number 6, Leonard buys Penny a car.
14:52 These two may not always see eye to eye, but they definitely care about each other,
14:56 even if they don't always know how to show it.
14:59 When Penny panics after her car breaks down,
15:01 Leonard unintentionally rubs salt in the wound by patronizing her in front of all their friends.
15:06 It doesn't take him long to realize what a jerk he's been,
15:09 and he makes it up to her by buying her a car.
15:12 This isn't your car.
15:13 I know. I thought we'd take yours.
15:16 The gesture is so sweet and shows that he's actually just been looking out for her the whole time.
15:22 In season 12, when Leonard's upset that he might never experience fatherhood,
15:26 Penny rents out the Batmobile in an equally adorable gesture.
15:30 I rented you the Batmobile for the day.
15:32 This is amazing. Thank you.
15:35 Be careful. I did not get the insurance.
15:40 Number 5, Penny says I love you to Leonard.
15:43 Leonard becomes jealous after learning that Penny has a young, attractive British study partner
15:48 and embarrasses her when she catches him trying to scare off her new friend.
15:52 Listen to me. You are the one I'm with. You know I love you.
15:55 So will you please relax because you're driving me crazy.
15:57 When Penny confronts Leonard, she ends up accidentally blurting out that she loves him.
16:02 They're both lost for words after she drops the L-bomb
16:05 and quickly decide to part ways before they start crying.
16:08 It might not seem like the most romantic moment,
16:10 but it wholly encompasses what makes Penny and Leonard the couple we love to watch.
16:15 You're right. You should go.
16:16 Sorry.
16:17 Things have never been simple for them, but the love has always been real.
16:21 Number 4, The Proposal.
16:23 This one was a long time coming, and the showrunners really kept us on the hook
16:28 with a higher-than-usual proposal count between these two characters.
16:31 Who says something like that right in the middle of sex?
16:34 I don't know. It just came out.
16:35 Leonard's first proposal was badly timed, and Penny's was a drunken mistake.
16:40 But hey, all those misfires just served to make the real deal all the more exciting.
16:45 I finally realized I don't need to be famous or have some big career to be happy.
16:49 Then what do you need?
16:50 You, you stupid Pop-Tart!
16:52 Of course, even then, it's not your average proposal with Penny yelling at Leonard
16:56 that he's her Pop-Tart rather than brown muffin.
16:59 Although it's not the most romantic display,
17:01 he brings it back when he reveals the ring he's been carrying around for years.
17:05 It would have been so much more romantic if you didn't have monkey hair on your fingers.
17:09 Number 3, Penny Can't Be Romantic.
17:15 When Howard pulls off the ultimate romantic gesture,
17:18 Leonard points out to Penny that she has never done anything romantic for him.
17:23 Get ready, because there is a crap storm of romance coming your way.
17:26 Despite calling Rajan for help on the subject of romance,
17:29 Penny's crap storm of romance falls flat.
17:32 You have to feel bad for her,
17:34 but as soon as she reveals her box of keepsakes from their relationship,
17:37 all is forgiven, and the hearts of viewers everywhere absolutely melt.
17:42 The thank you letter you wrote me after the first time I slept with you?
17:45 Leonard realizes that he never needed some grand gesture
17:49 and is deeply touched by the sentiment.
17:52 They might not always know how to show it,
17:54 but these two really love each other.
17:56 Number 2, Leonard and Penny Get Married in Vegas.
17:59 This event was a long time coming,
18:01 but thankfully the couple made up for the wait by giving us two weddings.
18:05 The first time is a spontaneous Vegas one,
18:08 which they assume their friends are watching via livestream.
18:11 You've got a friend in me.
18:13 Is that the song from Toy Story?
18:16 He loves that movie.
18:17 I do.
18:18 It might not be conventional, but it perfectly reflects who they are as a couple,
18:22 right down to the vows.
18:23 With Leonard being prepared for his and Penny improvising, but nailing it,
18:28 the whole thing highlights all that we love about them,
18:30 and we wouldn't have it any other way.
18:33 That being said, their second wedding is also a nice bit of sentimental icing on the cake.
18:38 Before we unveil our top pick, here are a few honorable mentions.
18:43 Planning Leonard's party.
18:44 She goes above and beyond to give him a memorable birthday.
18:48 Too bad he misses it.
18:49 Sorry you didn't get your party.
18:51 It's okay.
18:53 Well, happy birthday anyways.
18:55 The dirty store.
18:56 Leonard gets creative to spice things up.
18:59 I don't really want to hang it.
19:00 What? Are you kidding? We're not hanging it.
19:02 But it's an expression of our love.
19:05 And our butts, not hanging it.
19:07 Funny Christmas gift exchange.
19:09 As they say, it's the thought that counts.
19:11 I hope that I think he'll appreciate what I got you.
19:14 Okay.
19:19 101 totally cool science experiments for kids.
19:22 Dancing in underwear.
19:24 How else do you celebrate a Sheldon-less living arrangement?
19:27 Wow, where did you learn these moves?
19:29 The world may have forgotten about Dance Dance Revolution, but not this new criminal.
19:33 Leonard supports Penny's commercial.
19:39 His pride is evident when everyone gathers to celebrate her big moment.
19:43 I'm proud of you.
19:44 Shh, here comes my joke.
19:46 How are you doing?
19:49 Sitting pretty.
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20:06 While it's clear Leonard is in love with Penny from the get-go, it takes her a little longer to reciprocate.
20:15 In fact, it isn't until Leonard and the guys prepare for their North Pole expedition that she first starts dropping serious hints about her feelings.
20:23 Bye.
20:24 Okay, bye.
20:25 That means I wish you weren't going.
20:32 But you know what they say, distance makes the heart grow fonder.
20:35 And indeed, Penny's heart balloons during Leonard's absence.
20:39 Ours are also ready to burst when he gives her this unique and ever so romantic gift upon his return.
20:44 Unlike a preserved snowflake, this gesture makes us melt.
20:47 It's a snowflake from the North Pole.
20:50 Are you serious?
20:53 It'll last forever. I preserved it in a 1% solution of polyvinyl acetyl resin.
20:57 And we know that Leonard and Penny, much like the thoughtful gift, will last forever.
21:02 That's the most romantic thing anyone's ever said to me that I didn't understand.
21:06 It's actually a pretty simple process. You see, cyanoacrylates are monomers which polymerize on...
21:12 [audience laughter]
21:14 Do you agree with our picks? Check out this other recent clip from Ms. Mojo.
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21:22 [music]