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].

My friend and I sang an a cappella rendition of Extreme's "More Than Words" at one of our football pep rallies in a desperate attempt to look cool. For a while, I wore pink Converse All Stars because I thought it made me seem daring and irreverent.

We spent six weeks there [in Vegas]. The only thing crazy that I did was shoot that movie [The Hangovers]. The stuff in that movie is way crazier than anything I might have done, drunk one night in Vegas. I mean we did it for real in the movie, so that's as crazy as it got.

When you're playing a fictional character reacting to the real world, it's incredibly difficult and confusing and kind of messes with your values a bit.

I've always been into toys and kits and models. I'm kind of a toy nerd.

What's cool is that in the story of the movie [The Hangover] our characters are also really kind of getting to know each other and bonding over the course of the movie. And I think you're seeing a real, a literal sort of friendship growing both in us as actors and on screen as characters.

There really aren't any deletes [in The Hanover movie]. There's like one or two deleted scenes but they're not important or meaningful scenes.