Monday, January 7, 2013 - The cast of Warner Bros. Pictures' 'Gangster Squad' arrive at the premiere at Grauman's Chinese Theatre in Hollywood, California. Among those seen here are: Ryan Gosling, Emma Stone, Sean Penn, Josh Brolin, Giovanni Ribisi, Michael Pena, Mireille Enos and Russell Brand (with a new lady friend). Sean Penn, who usually shies away from the crowd, takes a moment to sign autographs.