When you work on a movie or a TV show, you're a family, so if something that's a two-minute thing in the movie is causing a rift in the family, you also have to think about at what point do you fight this, and at what point is this rift worth having in this very small, very tight group of people who are just there to make something great and funny.

I make decisions to do movies based on the cast. I'd just been working with Zach Galifianakis on 'The Hangover', and I was thinking, I've got to find something to do with this guy immediately.

How many days do you have that are just purely dramatic? How many days do you have that are just purely comedic? It's usually a combination and I think that's what real life feels like.

When you work on a movie or a TV show, you're a family, so if something that's a two-minute thing in the movie is causing a rift in the family, you also have to think about at what point do you fight this, and at what point is this rift worth having in this very small, very tight group of people who are just there to make something great and funny.

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.'

I think reviewers have become particularly venomous because, in a way, the power has been sucked from them. A 15-year-old can write a review on the Internet and it means as much as Roger Ebert's review, and that just makes Roger Ebert mad, so he comes out harder and stronger.

I grew up raised by my mom and my two sisters, so I never had a real male influence in my life. I never really understood heterosexual male relationships.