In an impressive comeback, Robert Downey Jr. took on the role of playboy genius Tony Stark in Jon Favreau's adaptation of the popular Marvel comic series. In and out of the iconic suit, Stark never misses a chance to make a sarcastic comment or brag about his abilities, making him one of the most likable jerks around. Considering "Iron Man" had the third best opening weekend of 2008 and is still getting sequels, Downey's Stark must be doing something right. —XFINITY Entertainment Staff (Photos: Disney)
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