Matt Damon, Jake Gyllenhaal Turned Down Avatar

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Talk about regret!

Both Jake Gyllenhaal and Matt Damon turned down the starring role in blockbuster Avatar, the movie's director, James Cameron, tells the Los Angeles Times.

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"I don't think they ever had a problem with the CG," Cameron said. "Honestly, did I go out and try to woo them? No. I had my heart set on Sam. Maybe they sensed my lack of 100 percent commitment from me. Maybe it was the subject matter. This was a big Star Wars-type movie. They're both serious actors."

Instead, Sam Worthington — who was living in his car while struggling to become an actor — got the part. Cameron tells the Times that he only approached big-name stars to please the movie studio, but Worthington was always his first choice.

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Worthington has already signed up for the sequel to the flick, which has earned more than $2.5 billion in theaters worldwide.

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Gyllenhaal, 29, next stars in Prince of Persia: The Sands of Time. Damon, 39, is up for best actor in a supporting role for drama Invictus.

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