The Uncanny (1977)

Odd little entry in the horror-anthology CATegory from Canada (never theatrically released in the US) finds a writer (Peter Cushing) attempting to interest a publisher (Ray Milland) in his manuscript, which (through three stories) reveals--ta-da!--a feline conspiracy to take over the world. (You mean they haven't already?) He's serious. So's the film. Now THAT'S funny!