I think we grew up thinking that the funniest things on TV were the old, serious movies. I always liked the Marx Brothers, but the thing that always made us laugh were movies like Zero Hour. That's what inspired us.

We're producing a movie now, 'The Onion' Movie, and it's very difficult for me to be on the set. If I'm not right in the trenches, it's very difficult for me to watch another director, because I'm not involved and it's not exciting.

It's useless to try and make rhyme or reason of it, because one guy thinks one thing and the other guy sees a whole other thing. So I try not to take them too seriously. Lately I have them screened so I only read the positive ones.

Chevy Chase and Bill Murray - we thought those guys were funny. We love Bill Murray, but we didn't think they were right for Airplane! because it would step on the joke if there was a known comedian.

I've always thought those guys are really funny. And I love Dumb and Dumber, Kingpin and Mary.

I don't know if I'd want to do that anymore, because you always get bigger laughs on college campuses. So, when the film plays in front of a city audience, you've probably cut too loosely.

Our producer Jon Davison thought it would be a good idea to put in additional TV scenes. So, they sent me a tape of these additional TV scenes, and I watched them, and I didn't think they were that great. I didn't think it was worth putting them in.