31. 'Killing off' Cyclops and Professor X
It's not that X-Men: The Last Stand is a bad movie (because in many ways, it's not); it's just fatally indifferent to so many foundations of the X-Men canon — including these two beloved characters. At least Xavier (Patrick Stewart) got a somewhat epic death scene; poor Cyclops is killed off-screen five minutes into the movie. (Yes, James Marsden was committed to Superman Returns, but there's this thing called recasting….) We've always heard that then-Fox CEO Tom Rothman wanted to kill the franchise with this film. Ultimately, he didn't (nor did he permanently off Professor X, per the post-credits sequence and Patrick Stewart's presence in the new X-Men: Days of Future Past), but it sure seems like he tried his hardest to put a stake through its heart.