Arnold Schwarzenegger goes back to his bodybuilding roots

While Arnold Schwarzenegger was recently the face of California politics, it's his pioneering efforts in bodybuilding that have defined much of his life's work.

So it's fitting that he appears in the upcoming documentary Generation Iron, which follows seven bodybuilders who are gunning for the presitigous title of Mr. Olympia.

It's Arnold's first appearance in a bodybuilding documentary in more than 35 years - 1977's Pumping Iron launched his acting career.