In a battle of good versus evil, Stewart's Professor Charles Xavier battled Magneto (played by fellow knighted British Shakespearean actor Ian McKellen, right) in the "X-Men" movies. In 2009, the two also starred in Samuel Beckett's "Waiting for Godot" in London. Aside from briefly working together in Tom Stoppard's 1977 play "Every Good Boy Deserves Favour," this was the first time they'd shared a stage.
Attila Dory / Twentieth Century Fox
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