My sense is, I think it's okay for directors to do movies that speak to other work in their career.

Also watching a movie on DVD is different than watching it in the theater.

I call it like the domino theory of reality. If you can go one step at a time and it seems to make sense, you can then take your audience into an area that is relatively outlandish.

I don't think my sense of humor has changed at all; I was born with this, for better or for worse.

A good actor is someone who knows how to take the part and make it real and make it honest and be effective in it. If it's in a funny movie and, as long as they are cast in an appropriate way, humor will come from it.

It's been about 15 years, and I've never really worked seriously in CGI and I thought that here was an opportunity to do the kinds of things that I was not able to do on Ghostbusters.

There's been an amazing backlash for the last decade in America: political correctness. In many ways, I think that, while we've been remarkably violent in our media, there's been a real schizophrenia. In private, on the Internet, and on public-affairs shows or talk radio, we're way more explicit than we've ever been. But traditional Hollywood has been much more frightened than it ever was in the '70s about presenting things that could be perceived as politically incorrect.