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

The home viewing experience is slightly different and there's room for these kinds of extra excursions.

I'm not sure I agree with the thesis, because I think that even though something grotesque or gross has been part of film since way back, what we accept or what we can get away with on the screen is broader now.

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.

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.

I've always been a fan of science fiction films, and I've never been able to put my particular spin on it.

The real trick for me as a director is to make sure that people don't start pushing because the harder you push as a perform the less funny it becomes.