Detlik: Well my most favorite films are : <films>
I cant remember more atm.
I'd like to throw in a slightly odd one, but you seem to have interests that would lead you there. Have you seen the film "Brick". It is in my opinion a brilliant mix of film noir, and american high school movie. It's dark, very fast (you need to really pay attention to every line), and very clever.
Failing that, I'd recommend the Coen Brothers films. They've done a lot, I recently saw True Grit in the cinema, and loved it. Their older stuff like Millers Crossing and Fargo are accepted as classics.
Of course, you also missed off The Usual Suspects.