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Justin Timberlake

Fred Duval/FilmMagic

Justin Timberlake rocked his body, all right.

The singer was hobbling around on crutches last night after a stunt gone wrong on the set of his upcoming film, Now, his rep confirms to E! News.

How bad is it? Could he lose his leg?

The injury doesn't appear to be too serious, but the Grammy- and Emmy-winning star is due to get examined by doctors today.

According to a source, Timberlake was attempting to do his own stuntwork when he "heard a pop" in his leg.

But a little gimp didn't stop him from making an Oscar push. Timberlaked hopped up to the ArcLight theater in Hollywood last night to join fellow castmembers from The Social Network for a special Q&A session. The panel discussion came just hours after the film was named Best Picture by the tastemakers at the National Board of Review.

The war wound hasn't stopped Timberlake from continuing filming on Now, a sci-fi thriller costarring Amanda Seyfried and Olivia Wilde.