I made a handshake agreement with my best friend in college, Michael Shamberg, who is now a movie producer. We used to write shows together, and we said, "Let's only do what's fun. Let's never take a job where we have to dress up in a suit."

When a director writes, there's a compulsory arbitration. You have a right to challenge any of the arbitrators, but they pick three of four arbitrators who read all the drafts with no names attached and then allocate credit.

If people work together, if they can keep a cooperative spirit and use their ingenuity and balance it all with good humor and good will, then there's nothing to be afraid of. That's the sappy part of it, ... On the other hand, every Halloween for many years when my kids were trick-or-treating I would put on my 'Ghostbusters' jumpsuit with a police flashlight to protect all the kids from ghosts.

I had a lot of fun working with John Candy. We had a pretty good rapport.

First and foremost, you have to make the movie for yourself. And that's not to say, to hell with everyone else, but what else have you got to go on but your own taste and judgment?

I'm a writer-director-actor, which I've always kind of enjoyed. I compared it to the Olympic biathlon. "Not only can he cross-country ski, but he's a terrific marksman as well." I want people to say, "You mean that writer performed a tracheotomy?" That's right, I do everything.

Never hit anyone in anger, unless you're absolutely sure you can get away with it.