My first student film was Orientation, which was basically the set-up for Animal House. There are a couple of scenes that we later borrowed in some form.

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 think if people want to see pure sex in the movie, they have the Internet and the extraordinary things are available.

I think Junior is certainly a science fiction premise as is Twins, as is Dave, beyond Ghostbusters.

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.

I don't think there will be another Ghostbusters. I think we're all too old to do it. I think we've done it a couple times and there is not that much to get out of it, to do that would be fresh in it.