I'd always been a science fiction enthusiast.
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.
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.
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.
The home viewing experience is slightly different and there's room for these kinds of extra excursions.
We got some devastating reviews on Animal House at the start.
When you have a performer as talented as Bill Murray or as Harold, that can write as well as they can perform, you can do a final draft on the set if you think of it that way.