In the future, a paraplegic marine's avatar (a goofy blue-skinned cartoon-like incarnation of himself that he controls while sleeping) is sent on a mission to mingle with the natives of a distant planet. The pictures are pretty but the story is a lame rehash of a theme that has been done much better before. The movie becomes increasingly tedious as it lumbers along for nearly three hours. Cameron is not so much interested in making a compelling movie as in flaunting his prowess with special effects. Weaver's presence only serves to remind one of how good a sci-fi film can be ("Alien"). This nonsensical movie plays out like a dull computer game.