Improvisation is about finding the best joke or the silliest way to get something across. Improvising conflict is always fun because you can just go for it.

They [Mike Tyson and Todd Phillips] actually struck up a really pretty incredible chemistry, those two, and I think they really trusted each other.

I think that music at inappropriate times with inappropriate volumes can be the funniest thing ever.

It's just one of those things like when you're not supposed to laugh, it makes it that much harder to stop laughing. And for some reason Zach [ Galifianakis] and I get in this feedback mood of giggling, and on the set of Hangover we just couldn't get through stuff.

This may come as a surprise, given the nature of my job, but I am very guarded and contemplative. I'm not a naturally boisterous person.

Let's just say it was damn hard [to make the Hangover]. I've got the bumps and bruises to show for it. It's funny because things that don't even look that bad on screen were still extremely painful.

I went to Oberlin College, and they don't have a film major, but they do have what's called an individual major, where you can sort of pitch to a committee your own course study, and if they approve it, you have essentially just designed your own major. So Oberlin doesn't have a film major; they do have a film minor... And then my spring semester of my junior year, I went off to NYU film school as a visiting student - they have a program for kids from other schools to come in for a semester.