Die Hard With A Vengeance shooting was a great time, because we had an interesting script. The first script was called Simon Says, and something was going on, because some days we'd get to work, but we wouldn't actually have dialogue. We would go to Bruce's Willis trailer, and they'd say, "Okay, you have to go from 168th Street to 97th Street today. We're going to do it in the cab, and Sam, you say this. Bruce, what do you want to say?" And that's how Bruce's "hey, Zeus!" thing came up.

Any changes that I made to my line, I asked if I could make them, which I do in every movie. So far everybody's been gracious enough to say yes. The only improvising I do is in the movies I do with Chris Guest, which is what we do.

I did 'Formula 51' because I got to run around Liverpool in a kilt, with golf clubs.

I'm sure there are a lot of Italians who refer to themselves as goombahs and greaseballs and whatever. That's what people do. It gives them a sort of familiarity that other people don't have.

Quentin Tarantino was talking about Ordell a little bit, and I was like, "I'm sure Ordell is one of those people who thought Superfly was the greatest movie ever made." So he cuts his hair and straightens it, but he never has enough money to maintain it perfectly. So it's kind of nappy around the edges, straight and kind of puffed up. That's why he'd always keep it in a ponytail or a braid. We were just having fun and creating a distinctive character.

I did play a dentist in Waiting for Guffman. I wrote the speech at the conference. In the original script, when it got to that scene, it was, 'Thank you very much. Good night.' Literally. I just thought, 'He keeps talking about this speech. The keynote address is the big thing in his life and this is too important to say, "Thank you. Good night." I think we have to see and hear him doing what he does.' So I got together with my dentist and we worked through a few things.

When you start to talk about comic books, a lot of the time, people forget about the comic part of it. They need to be funny.