Directors tend to be more underrated than overrated because it's a quiet job and people don't really understand it.

When I was in NYU Film School I drove a taxi in New York for two years, I felt like I owned my own business with that little taxi.

You're only as good as your body of work, and everybody has issues, whether it's Steven Spielberg or Martin Scorsese. I'm not comparing myself to those guys, but you learn more from the misses than the hits.

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.

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

You know, if I started worrying about what the critics think, I'd never make another comedy. You couldn't pick a less funny group than critics - you couldn't find a more bitter group of people!