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.

I mean the fun part about when Andy Bernard sings on The Office is he usually embellishes the songs in fun, stupid ways. That's just something that I do in life, like in the shower or whatever. So a lot of that stuff is pretty spontaneous.

As a hobbyist, there's something about miniature anything that captures my imagination.

God bless him, I mean a lot of times you get non-actors on a set and they get really self-conscious, especially when doing something crazy like singing along with Phil Collins. They get sort of reserved and self-conscious. Mike [Tyson] completely trusted Todd [Phillips] and totally put everything into it.

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.

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.

One of the biggest breaks we had actually, one of the biggest, the hardest I laughed on the movie [The Hangover] was the baby was just doing ridiculous things and making hilarious faces. But I'm sitting there and I'm supposed to be having this exchange with Zach [ Galifianakis] and the baby is like staring at me with these huge eyes and acting, and just making the most cerebral faces, and I could not keep it together.