I also saw the film last night. I thought it was fantastic. It basically takes Powell's The Red Shoes and mixes it with elements of Cronenberg and Polanski (with just a pinch of Carrie added for good measure), and it does it rather seamlessly. The viewing experience reminded me a bit of Shutter Island, in that it unapolagetically hits a lot of familiar genre tropes and everything is foreshadowed kinda early on, but the dialogue, performances and direction really elevate it to the level of just being a straight up great film. Just a really trippy, nutty horror flick about a girl losing it. I think the Wrestler is still my favorite Aronofsky, but this is definitely in my top 3 of the year.
Oh, and Natalie Portman better get that Oscar.