Heath Ledger locked himself in a hotel room for a month to prepare for his iconic role as the Joker in The Dark Knight
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During World War 1, Harry Houdini took 1 year off performing to help sell war bonds and teach american soldiers how to escape from German handcuffs.
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Ian McKellen and Patrick Stewart had no idea how to play chess when they appeared in X-Men 2.
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The Rock accidentally knocked out Michael Clarke Duncan while filming a fight scene for The Scorpion King and had a custom Rolex made as an apology gift, but liked the watch so much that he kept it for himself.
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Johnny Depp travels with his Capt. Jack Sparrow costume to make impromptu visits to sick kids in hospitals.
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The actor playing The Mountain in Game of Thrones Season 4, Hafþór Júlíus Björnsson, was only 25 years old at the time of filming.
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Keanu Reeves gave $75 million of his matrix sequels paycheck to the film’s SFX team and bought the entire stunt crew Harley Davidson motorcycles.
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Clint Eastwood was in a plane which crashed into the sea. He and the pilot escaped the sinking aircraft and swam 3 miles to safety.
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