I just visited Evhead and was surprised to see a similar post!
I watched Requiem for a Dream yesterday, not expecting to like it much because of knowing how depressing the story was going to be. However, I ended up loving the movie, particularly Darren Aronofsky's visualization techniques: the split screen, the hip-hop style montages, the fast motion sequences. These techniques really helped to tell the story of the various characters. True, the subject matter (mostly toward the end) was depressing, although I think quite realistic. Ellen Burstyn should have won the Oscar for this performance. In fact, all the characters that were focused on–Jared Leto, Jennifer Connelly, and Marlon Wayans–were superb. The DVD has a great menu too.