Many of the above, but the movie that really makes my synapses fire is "The Believer" with Ryan Gosling. I caught in by accident one night and couldn't get it off my mind for days. I've since seen it a few more times, and I'm still trying to decipher the message behind this movie. I think there are a lot of subtle nuances behind it. The one that comes in second for making me scratch my head is "Mulholland Drive." Still trying to decode that one fully as well.
Danielle