Personally, even as a huge fan of Black Swan, I would not call Nina heroic at all, she was trying so hard to be something her mother could not be instead of just living her life on her own terms, the one adjective to describe her would either be "abused" or "deranged" and one was the result of the other.
Also, Andrew Garfield is the likable center of The Social Network, which is why most people predicted he'd be the sole cast member nominated at the Oscars this year until all the critics groups started awarding Eisenberg. Come on, look at how it's sweeping EVERYTHING, likability won't be a factor in who is going to win, it'll come down to if the Oscars choose the more modern film, or the traditional opponent, which in my opinion is The King's Speech, not True Grit. Some of you seem to think it will only resonant with nerds, or Facebook junkies or something which is simply untrue. All that aside it is a compelling character drama with a flawless cast that pulls off the film's greatest stunts: the dialog. One poorly delivered character, or hell one poorly delivered line and the film would have unraveled a bit, but Fincher's direction and his cast deliver. Though I went in thinking the lighting pallete was going to make the movie come off as kind of redundant visually for Fincher, the camerawork and editing make up for it, all of this from a film that easily could have been staged in the least complicated way and still have been acclaimed. Again, if the filmmakers hadn't hit a homerun with each of their roles (along with the very idea of making this into a movie) it wouldn't be sweeping every award in its path. Contrast that with The King's Speech, which is a great film, but it does everything in a safe, traditional way. They have split the top prizes in the past, and picked safer material as well, which is why it's possible Fincher wins and TSN loses, but I think even the Academy don't want to be seen as out of touch nowadays.
Man, why am I wasting my time analyzing something I hate? The Oscars and their prestige with close-minded moviegoers fucking suck... yet every year I get pulled into arguing about them.