Out of all the films of 2011, "Black Swan" got the most U.K. complaints? According to the British Board of Film Classification, the award-winning film was too disturbing for some--but it wasn't the world of psycho ballet that upset them. It turns out that the sex scene between Mila Kunis and Natalie Portman was too graphic. The films "Hangover Part 2," "Breaking Dawn, Part 1" and "Sucker Punch" also received complaints.