Actor James Caan walked out of the hospital with a pin in his left shoulder and his arm in a sling Friday, heading home to recuperate from a motorcycle crash. The 48-year-old star of "The Godfather" and "Alien Nation" crashed his Harley-Davidson last weekend while heading to lunch with some motorcycle buddies. Doctors operated on the shoulder Wednesday at St. Johns Hospital and Medical Center in Santa Monica, Calif. "He's supposed to take it easy for at least a few weeks," said Caan's publicist, Paul Bloch. "But you never know. He's a pretty active guy."