That scene where she is stretching in her apartment and she puts her leg up to the ceiling while keeping her face down-- that wasn't Natalie, right? That couldn't have been. Only a professional dancer could possibably stretch to that degree!
Why can't you believe that Natalie did that? Because she is
just an actress? Because I use to be able do that stretch and I am certainly not a prima ballerina or professional dancer. I have had training, but am not a "dancer". I am a singer and actress but I can dance very well and often get cast in "dance" roles. When I was doing more dance musicals, I could do that stretch. (Now it's a matter of lack of conditioning and age catching up to me...

) You can condition your body to do that with some disciplined training and when you consider that it was Natalie's only job to train like that for over a year, and she had had some training prior to that, I have no doubt that she could have conditioned her body to do that stretch. She, from what I understand, is extremely disciplined and I don't have any reason to doubt that she didn't push her body to it's limit to get the stuff she could do just right.
Even if it wasn't her though, who cares? It's still her acting that was recognized not her dancing.
http://www.csmonitor.com/The-Culture/Movies/2011/0330/Mila-Kunis-says-Natalie-Portman-did-most-of-her-own-dance-moves-in-Black-Swan
The article reports that they counted dance shots, and out of 129, 111 were Portman's.
Well that seems like the majority of the dancing to me. The pro did the stuff that would have been more difficult for Natalie to do as well, which is what Natalie and the studio said she did. Why are people so up in arms that her double didn't get the "recognition"? She did. No one denied she did that stuff. They just didn't fall all over themselves to give her the "status" it seems so many think she should get for her role in he movie. Her role was to be
invisible. Her job was to help maintain the illusion. She did that. Why do people want more now?
Do I think Natalie would have been
nice to thank Lane in her speech? Yes, but I certainly don't think it was necessary and I am certainly not going to hold the studio or Natalie accountable for it. A LOT of people were involved in making that movie, and a LOT of people were involved in making Natalie look good. They did their jobs well and their reward was that the actress they were suppossed to make look good won the award. She can't possibly be expected to thank every.single.person. That speech would last for hours. Besides, it would make more sense to me that the "best actress" would want to thank the people who helped them 'act' right? I don't imagine that Lane was the one that helped her with that. Lane and Portman likely didn't interact all that much, if at all on set. Lane was really a tool of the director and editor. And if I recall, Portman did do a blanket thank you to the people who made her look good in her speech (though I don't remember specifically what she said). I would imagine that included her double.
There is dignity and professionalism in the way other doubles handle thier roles. They don't make a fuss about not getting the recognition. They know that their job is to be invisible and make the actor look good. To maintain the illusion for the film... and they do it well. Other doubles and magazine writers don't go around proclaiming thier fears that martial arts is going to be portrayed a certain way or claim ninja expoitation when a new Karate movie comes out and the fight double for the star isn't thanked properly. No one went after the studio for not properly thanking Heath Ledgers double after Dark Knight came out and he won the Oscar. Christian Bale also had a double for the fight scenes. No one called him ungracious for not thanking that guy at the Golden Globes. No one went around counting the scenes where Pierce Brosnan was diving from bombs vs his double in the Bond movies.
The magazine and the dancer made it an issue and I have more of a problem with that then the fact that Portman didn't thank her directly at the Oscars or the studio didn't give Lane more "recognition". Does it hurt the film or is it going to hurt DVD sales? Probably not, but it does taint the illusion now.