Snakes on a Plane - When a film is made to be intentionally horrible it has to be good.
'We need to make a barrier between us and the snakes.'
SAW I,II,III - The acting sucks, yes. But Jigsaw and his games have really pulled me in and I'm a fanboy, twisted as it may seem I even have a shirt with two chopped off fingers on it. <_<
Se7en - More grisly suspense, but arguably a better film because it had good actors and a greater sense of fear and terror. (That scene with the model ... )
Pulp Fiction - Do I even need a reason?
Night Watch - Very interesting film, some interesting ideas and it even had a good dub. o_O
Spirited Away The.best.Miyazaki.film.Ever. Howl's Moving Castle paled in comparison to the adventure of Chihiro/Sen, and the film just had a magical feeling to it.
Borat Some segments on Da Ali G show may have been better but the movie was still very well done.
Kairo - Pulse was the American version of this film, but it was toned down and not nearly as thematic as this Japanese horror film, which is very similar to the novel Cell by Stephen King (which came out later).
Ichi the Killer - It's Ichi. The Killer.
A Clockwork Orange - One of the best film adaptations I have ever seen. Really did wonders for the book and imo brought in a new audience who couldn't follow the novel.
Rocky III EYE OF THE TIGER!