Have seen it, great movie.
First off, the dancing is good. I know nobody really cares, but I was really impressed Portman could carry that off.
Second, I really like the way Aronufsky physicalizes the stress Portman's character undergoes. Not just the weird trippy shit she sees that nobody else does, but the way the madness manifests itself in the weird scratches and damage her body takes and the way her bodyweight goes down during the movie.
Aranousfki does a great job at making me like the rampant douchebaggery that is the director. He's lecherous, cunning, but ultimately driven by a level of artistic brilliance that makes up for his many flaws. I was rooting for this character the entire time.
I loved the weakness of the main characters mother. Her vulnerability. We never find out what she does, but we understand she intimately wants Portman's character to succeed, which makes her ultimate rebellion even that much more outstanding.
Portman seems waifish and easily-taken-advantage of. You know you like it.
All-in-all, I enjoyed the movie. Best of Arinooksi and Portman. Go see it if you like movies.