You are literally too stupid to insult.

You see a lot of sides of people on a movie set because it can be really taxing and to kind of go through all that together - you really get to know someone.

I'm the worst in The Office. It's a problem. They've had to shut down the set for like 30 minutes because of me.

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.

First there was the New Hampshire primary, and we had nearly a year leading up to it. And now, look! Three primaries in one weekend! How many of these things are they going to have?

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].

I didn't mention the tooth thing to anyone until it became clear that...we started to discuss just taking it out of the movie [The Hangover] because we couldn't find anything that worked and they couldn't afford to do a full like digital effect. So that's when I called my dentist and it worked out.