Just watched James Cameron's Avatar last Jan 8 with my eldest Son(18).
It's an experience.
This was on the big, big screen, with the full 3d effects. And it really felt different. The whole movie was built to make people feel immersed into the world of Pandora. I enjoyed it. Over two and a half hours, no breaks, and action, stereotypes, action, wonderful effects, fine actors, action, and action.
Blunt spoilers ahead after the jump...