Saïd Taghmaoui played Umar Usef in the episode The Dogs of War. He has also had a recurring role on LOST (with Terry O'Quinn) and a number of films, including Three Kings, Spartan (with Clark Gregg and Ed O'Neill), I Heart Huckabees, The Kite Runner, Traitor, G.I. Joe: The Rise Of Cobra and Vantage Point.