I like - there's a better word for it, but I like the danger that a comic brings to a role. It has a feeling, even though everything's scripted and everything's planned what you're going to do. When I see Will Ferrell or Sacha Baron Cohen, there's a feeling that anything could happen.

I was taught that you didn't want to be part of the group - that it was better to do your own thing.

There's a darkness under 'The Hangover' because ultimately there's a missing person and it's not really that funny. There's a sort of darkness under it that I love, and still people are laughing as hard if not harder than they did in 'Old School.'

Reality television hasn't killed documentaries, because there are so many great documentaries still being made, but it certainly has changed the landscape.

I take it very seriously, music. I think it's one of the tools that a director has with which to kind of paint. The right music can sometimes do five pages of scripted dialogue.

I find I like to work with a lot of the same actors, because I find that there's sort of shorthand there, and there is this unspoken trust, both ways. They trust me and I trust them. And I know what I'm going to get from them, to an extent. It's just fun, kind of creating this little family.

You set the tone on the set that you want to see in the film.