December 17, 2009 4:00 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. US & World Videos 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner 2:05 How ‘Love Is Blind' made Vanessa Lachey and Nick Lachey's marriage stronger 5:49 Kelly Clarkson hilariously attempts handmade pasta with chef Evan Funke 1:36 O.J. Simpson's cause of death revealed 2:03 Does Shakira still believe in love following Gerard Piqué split?