The piano song that I do in the movie [The Hangover], it's a great example, that was never - that wasn't in the script.

We played around and improvised a ton [in The Hangover], and I think it's hard to say at this point what's what. Gosh, I wouldn't even know how to take a stab at it. The script was so good that we really didn't need to improvise very much, but I think we just found a lot of moments on the set. It's really cool when you get onto the set of a movie and you start shooting the scenes and you start to actually incorporate the environment.

I'm working on a script right about Civil War re-enactors who go back in time to the actual Civil War. It's kind of a big, crazy Back to the Future comedy. So, of course, it's the Civil War - I play the banjo. I was just having a conversation with one of the producers about some of the material and he was like, 'You know, we have to work in a scene where you play the banjo. And I was like I'll get behind that.

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

Alcohol causes conflicts, firearms resolve conflicts.

I think the culture of Civil War re-enacting is also incredibly fascinating.

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