December 17, 2009 7:00 pm James Cameron: I Knew Sam Worthington “Was The Right Guy” To Cast “Avatar” director James Cameron discusses the risk he took by casting an unknown actor as the lead in his latest film. Local 0:44 At least 5 shot along Connecticut Avenue in Dupont Circle 1:36 O.J. Simpson's cause of death revealed 2:36 Super dad makes Mario-themed obstacle course for son's birthday 2:03 Does Shakira still believe in love following Gerard Piqué split? 1:59 Ellen DeGeneres jokes about being ‘kicked out of show business'