Avatar is, undoubtedly, a massive technological achievement. The 3D version allows you loose yourself in the environment and forget the characters are computer generated. However, the awe of the new format quickly wears off when you realize that Avatar, the story, is the same tired, unoriginal theme we've seen in so many movies before. It is that overused big bad corporate (or government or both) complex against the benevolent and eco-aware indigenous people. You've seen this movie before when it was called Dances with Wolves, Braveheart, and Last of the Mohicans. With that in mind, some of the action and dialog becomes a bit comical. Sigourney Weaver's acting is so bad it is distracting. Skip it.