Joseph Gordon-Levitt

500 Days of Summer star Joseph Gordon-Levitt plays Zooey Deschanel's love interest. As Mr. Sensitive in this flick, Joseph will definitely melt your heart. But don't let his boyish looks fool you -- he's got more on his resumé than flashing a cute smile. He quit acting at age 20 to move to Harlem and study at Columbia. Now that he's back on the big screen, he's not skimping out at all. This summer he's also starring in G.I. Joe: The Rise of the Cobra as the Commanding Cobra, too!

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