It's a pity that Avatar isn't more original. Unfortunately, it's just another excuse for James Cameron to indulge in his Vietnam fetish, and it also manages to be the umpteenth onscreen version of the warrior coming-of-age story. Thank God he also has a heroine fetish, because without Zoe Saldana's character, this thing would just be 10,000 BC.Saldana's the great humanizing force of the movie. It's her emotional life that keeps the movie alive, despite every effort Cameron makes to suffocate...