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.

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.

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

That's actually a rare thing to be on a set full of people that you admire and make you laugh all the time.

I found myself often asking the question, "Who deserves to be made fun of?" Depending on your mood, the answer can be no one or everyone. It took me a while to understand the math of how those field pieces came together. I don't think that ridicule is ever funny, but there are times when that gets the biggest response.

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 have profound respect for Sacha Baron Cohen, but Borat is not a particularly comfortable movie for me to sit through.