As an actor, you can really play the intensity and gravity and seriousness of the moment, and just rely on the circumstances being funny. The joke is kind of the situation you're in, or the way you're reacting to something, as opposed to the characters just saying something witty.

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

I was just fooling around with the piano and Todd [Phillips] was like, 'Hey there's a great spot in the movie [The Hangover] where we need a little bit of a breath in the narrative. You should write a song and stick it in there.' And I was like, 'Well, what should the song be about?' And he said, 'The tiger.' 'Oh, okay.' So I went off and I wrote this song. I came back and Todd and I tinkered with it a little more and then we shot it right then. It all happened in a day.

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

Getting any movie made is just like trying to push a giant boulder up a mountain, and there's so many moving parts. Obviously, there's the creative side, and then there's the logistical side, and they're both colossal.

Working on The Daily Show, I co-produced all those field segments, and that's another huge thing.I probably did more than 100 field segments.

The improv stuff, that's always surprising so a lot of times that's really funny.