Jack Black & Michael Cera: Year One Clips & Quips

It took me a while to draw out these kooky costars, but Year One cavemen Jack Black and Michael Cera provide low-key laughs in person to perfectly complement the movie's madcap antics. DirectorHarold Ramis also sits down to spill the beans on all the cool cameos and onset camaraderie.

Politically correct bonus fact: Jack Black makes clear that while no animals were harmed in the making of this film, some animals were f--king annoyed. So now you know.