My only conclusion about structure is that nothing works if you don't have interesting characters and a good story to tell.

With both Caddyshack and Vacation, it's not like the subjects were serious enough that they engaged my interest for another round. I love the characters, and the actors were great, but I didn't see the need to make another Vacation movie.

If you're doing six takes, instead of doing six variations on the same words, why not just throw out the words and make them up as you go along, if you're comfortable with it? It gives the movies a slightly rangier feeling, and more of an accidental feel, but it also makes them edgier.

Films are big hits when they touch a lot of people. Things are not funny in a vacuum, they're funny because we respond to some personal dislocation, some embarrassment, some humiliation, some pain we've suffered, or some desire we have.

A psychologist said to me, there are only two important questions you have to ask yourself. What do you really feel? And, what do you really want? If you can answer those two, you probably can leave your neuroses behind you.

We were tremendously encouraged by the testing of Analyze That. Audiences loved it. They were telling us that they liked it as much as the original. We recorded the laughs in the theater.

For me, most comedy scripts fail in the mechanical playing-out of the setup. They'll pay lip service to a moral lesson or a psychological progression.