Justin Timblerlake and Dan Aykroyd go bear

Justin Timblerlake and Dan Aykroyd have channelled their inner Yogi and Boo Boo for their new film "Yogi Bear."

The two actors posed for photos and talked to the media about playing the lead roles in the 3D movie based upon the picnic loving bears.

Aykroyd portrays the star, Yogi Bear, and Timberlake voices Boo Boo, Yogi's reliable sidekick.

Speaking about preparing for the role Aykroyd said: "Well, my preparations came when I would walk home through the snow and across the frozen creek from school in Quebec, in the winter of Canada in February, when the light left the sky at 3:30 p.m. And you get home there, and strip the snowsuit off and, you know, unfreeze the ankles. And Yogi and Boo Boo were my fire."

Justin also channelled the past to get the right voice for Boo Boo adding: ""I basically listened to the old 70s cartoons and just tried to mimic the voice. That's it. "

Anna Faris of Scary Movie fame also stars in the movie, playing a documentary filmmaker who wants to track down Yogi.