I think the culture of Civil War re-enacting is also incredibly fascinating.

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].

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.

I'm glad to always have that connection to a part of the country that doesn't really have anything to do with what I do. That said, there seems to be a lot of production drumming up in Atlanta these days. It would be kind of a dream come true to go back to Atlanta to work on a movie, but we'll see what happens.

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.

February is a month of months, and there is one special day: Valentine's Day on the 14th. I know it's still a ways off, but I just can't wait. Janice, if you're watching, will you make me the happiest man in the world and get out of my apartment?

It's incredibly fun to play someone that you don't like. It exorcises your own demons in a way. It's cathartic. We all have things that we don't like about ourselves, little things. And I get to amplify those things and put them out there. It's fun and it has a cleansing effect.