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.

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.

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].

When I was 15 I lost a tooth and had an implant put in. Cut to 20 years later, I'm doing this part [Andy Bernard] and the script calls for my character to lose a tooth.

You make adjustments according to the specifics of the character.It's something I feel like a lot of my comedic heroes have always done. It's not even necessarily vulnerability, always, but it's an earnestness, a genuine desire to actually do the right thing, but then still make really misguided, stupid decisions along the way.

I'm sort of laughing and so Zach [ Galifianakis] started laughing [on the set of The Hangover]. And Todd [Phillips] was baffled because what we were saying wasn't that funny, you know what I mean? And it was like all the baby's face. So Todd was like, 'What is going on? Get it together guys.'

As much as you do get beat-up doing even small action sequences, it's incredibly fun.