Description:With the release of their film American Reunion just around the corner, The Insider caught up with the stars of the franchise and discovered how Chris Klein stayed fit for the shirtless scenes he shot in the film. "For me it's all about the dancing. I'm a dancing machine," Klein revealed, and then showed us some of his dance moves and beckoned Justin Bieber and Chris Brown to be one of their back-up dancers.
An 'American Pie' Reunion!(8:59)