I've got a lot of favorite movies, and I'd never be able to sit down and simply choose just one film as my absolute favorite as I'm bit of a cinemaphile. Like comics, I'll take as much of the medium as I can get. It also depends on what kind of mood I'm in, and I tend to obsess over a film that I really enjoyed after seeing it for the first time. Like I'll watch all of the deleted/alternate scenes, commentaries, documentaries, and all of that other good stuff and still not feel satisfied.
I watch stuff from all the way back to the thirties, man. You know, the silent film era.
Instead, I'll say my favorite genres are probably horror, science fiction, and drama but really, I like it best when there's a perfect mix. Romance and action blockbusters tend to disappoint me the most but not always. I also really like hyper violent films, so Asian horror and Quentin Tarantino are always welcome in my dvd and blu ray collection.
I just saw Django Unchained today, and I'd probably consider that one of the best put together films I've ever seen. It was three hours long, but I wanted it to go on for just one more, and I don't ever say that about a movie.
The Evil Dead trilogy, Dawn of the Dead, Reservoir Dogs, Halloween, The Thing, Memento, Scarface, Battle Royale, District 9, and I could list so so very many....
Favorite Directors Include: Christopher Nolan, Quentin Tarantino, and John Carpenter.