Really, really loved it. Portman is mesmerizing and is a big contender against Benning. I'd be happy with either of them winning, though I'd probably choose Portman myself.
Kunis is spectacular, but Hershey is the real featured player here. She's terrifying and thrilling. I hope if this film is represented in the supporting category, it's by Hershey. Though neither has any hope of triumphing in that category- not with the likes of Melissa Leo and Amy Adams (on THRILLING display in 'The Fighter.')
One of my favorites of the year, but far from my favorite. I think it's written quite well, but the real gems of the film are in the acting, the directing, the cinematography, the design, the effects and- of course- the dancing.
SPOILER:
That "final transformation" dance at the close of the film is one of the most chilling moments I've experienced in a film in awhile. WOW.