Motion pictures are the art form of the 20th century, and one of the reasons is the fact that films are a slightly corrupted artform. They fit this century - they combine Art and business! ↗
As for Tenacious D, of course it could work as a full length movie; all it requires is a great writer and great director with an ability to think outside of conventional film comedy. ↗
Well it kind of is project to project because as a writer I think you always write to some degree about things that you know or things that happened - but my favourite filmmakers, my favourite movies of theirs tend to be the personal movies. ↗
I had to trick people into giving me money for my first film. Making a romantic comedy is easier and more expected from a woman than it is to make a drama about a Japanese warrior. ↗
What I think happens today is that a lot of filmmakers look at other films that are retro pieces, like L.A. Confidential, and say, oh, that's period. We didn't want to do the stereotypical stuff. ↗