Michael Clayton
I like Tilda Swinton and all, but her performance in Michael Clayton receiving awards bugs me. She was the only prominent woman character in the movie and was the only character who was insecure, emotional, and tentative. None of the other main characters appeared unsure of themselves for even an instant, not even the crazy guy. In short, Swinton played a stereotypically weak woman in a sea of stereotypically strong men characters. Boooring. At least her character wasn't just sexy and stupid...but is that progress?
(Warning, spoilers: One could also argue that Swinton's takedown at the end of the film could be construed as a comment on the part of the filmmakers about the proper role of women in the executive workplace. But I wouldn't go there.)