So long as your desire to explore is greater than your desire to not screw up, you're on the right track.

[Mike Tyson] was fantastic. Well, here's the cool thing about Tyson. It turns out he's a huge fan of Old School, which was one of Todd Phillips' earlier movies. So he got to the set and he already liked Todd and he trusted Todd.

When you try hard at everything you do, even when it feels foolish to do so, you’re opening up doors and possibilities you might not be seeing in the moment.

I mean they [ Bradley Cooper, Zach Galifianakis] are both just really good guys and also they're both extremely funny in very unique ways. We made each other laugh an awful lot, and that goes a long way. And we also went through some hard times. I mean it was hard to make this movie [The Hangover].

It's kind of hard to win most elections on anti-family, immorality, and Satan-worship.

No one employed [ chaos] better than Jim Henson, by the way, on The Muppets. He had all these chicken Muppets that just brought in the most glorious chaos to whatever scene they were a part of.

When we were not shooting [The Hangover] we were sleeping, so pretty much every waking moment we spent together. And, you know, Bradley [Cooper], Zach [Galifianakis] and I were acquaintances before the movie started but we became good friends very quickly and spent so much time together that it was just inevitable we were either going to really hate each other or really like each other. Thank god it turned out to be the latter.