What more does a moviegoer want than something they've never seen before? The new Avatar trailer has added more action and depth. It hangs on Sam Worthington's Jake Sully, who flies off to faraway Pandora to encounter the nine-foot tall blue Na'vi aliens. He enters this world full of hostile exotic creatures in the form of an avatar alien/human hybrid. And needless to say, James Cameron, the writer-director behind Titanic, is giving us action, danger, romance, and never-before seen visual effects--in 3D (which is obviously not operative with an online trailer). Will this sci-fi adventure wow enough general audiences to make back its ginormous budget? We'll just have to find out on December 18.