I didn't like Black Swan nearly as much as the others. It sort of had reminded me of The Wrestler a little, but I like that way more(same director). It was basically his most mainstream movie, most his other ones are more cult classics. Still really good and way better than most garbage released by Hollywood. His movies do seem to have reoccurring elements and actors. The mathematician from Pi was the creepy therapist in Requiem for a dream. His movies always have a surreal dream/nightmare element to them.
Guy Ritchie is another good director, his movies are generally really funny black comedies. I'd say the funniest is Lock, Stock and Two Smoking Barrels. A classic British movie, even funnier with the heavy accents. Like allot of directors his first few were good and then his most mainstream one, Snatch was the least likable.
It's the Rage, is another really twisted and funny movie that I'm surprised never really got props. Buffalo 66 was pretty strange and good to.