Stallone Brings the Muscle to Sin City

Sly Stallone is taking over Sin City with the help of some Hollywood heavyweights, and "Extra" is the only show there as he gets pumped for the new "Rambo."

Who's the superstar former bodybuilder who dropped in "Extra's" studio at the Planet Hollywood Resort & Casino? Plus, find out why Sly is calling the latest installment the most violent movie ever.