Laura, I watched The Kids Are All Right on a flight to LA, and thought the sex was purely gratuitous and embarrassing, especially being on a plane with others looking over my shoulder and seeing nakedness flopping around on my screen. I'm not a prude, by any means, but I just didn't find Mark or Julianne sexy when naked - I was grossed out more than anything.
Annette Bening was robbed when she didn't win for American Beauty. I just don't think hers is the top performance this year. Not to spoil anything, but her "discovery moment" was flawless because as you said, so much was achieved without saying a word.
Go see Black Swan, and pay attention to every little thing. I have a friend who said the same thing - it needs more than one viewing to catch all the little things. But being a fan of ballet, I loved seeing the dancing so much, I'd see it again. Just don't plan on getting a manicure right after you see it.