'Elf' has become this big holiday movie, and I remember running around the streets of New York in tights saying, 'This could be the last movie I ever make,' and I could never have predicted that it'd become such a popular film.

I like challenging myself. I like the challenge of rapping to fast beats, rapping to beats that are super slow, whatever. I like the challenges, so I'm not afraid to take on any piece of music and create a song to it if it feels right to me.

I've always wanted to sail around the world in a handmade boat. And I built a boat. I had a boat built for me, I mean, and my second day out to sea I realized that (a) I'm not a sailor, and (b) I have no knowledge of basic navigation.

Facebook is like jail, you sit around and waste time, you write on walls and you get poked by people you don't know

It doesn't really exist, this Frat Pack. We run into each other on occasions and we all like each other's films, I guess, but there isn't some big funny restaurant or bar where we all hang out. At least, if there is, they haven't invited me.

I just Fell Down the Stairs Holding a Guitar and Accidentally Wrote a One Direction Song

It would be great to be able to follow in the footsteps of Bill Murray. I really respect his ability as a comedian, obviously, but even more so as an actor.