To me Mila Kunis was the best thing about Black Swan acting wise and yeah there were a lot of rumors and stories on how that role was meant so much for her, can’t find anything since media likes to wash off any evidence of things especially for Hollywood IT peopleFrom what I can find after a quick search, Brittany Murphy did a screen test for Black Swan, she did not get the role, but Portman did, but her screentest was better. That to me is not "took the role away", but basically what happens if you cast for something. Unless there's more info on that out there somewhere?
I've nothing against Portman or Murphy (unless you count that Portman looks like Keira Knightley and I can't stand the latter for all the reasons mentioned here).
Also can't stand Jake Gyllenhaal (there, I said it), he looks like he peed his pants. No idea why women seem to go mad for him.
Blake Lively. I think I mentioned her here before and I can't even put my finger on it, but something doesn't sit right with me. Seems so try hard.