This is not a simple question at all. It depends on what mood one is in. I love documentaries and gritty dramas, but I don't always want to deal with real life. Horror movies are great fun - I have loved them since a very young age. And, of course, who doesn't love a good comedy? Not an easy choice at all. Also, I should add, if there were a choice for quirky independent that would probably be a favorite.
It was a nice thread, though.