Bradley Cooper on Acting and 'Silver Linings Playbook'

Silver Linings Playbook star Bradley Cooper on starting out in plays and then transitioning to the big screen. On his onscreen chemistry with co-star Jennifer Lawrence he praised director David O. Russell and said, "If you go and look at David's movies he does it every time, I mean Josh Brolin and Tea Leoni in Flirting with Disaster, Ben Stiller and Alan Alda and Jason Schwartzman and Mark Wahlberg in I Heart Huckabees and The Fighter, there's chemistry always."