I think we all have a fantasy of shedding our skin and moving into a new, strong, powerful body and this movie takes us there. The "good guys/bad guys" plot is fun and there aren't any surprises, but there don't need to be any. The special effects together with the avatar idea is so compelling that it carries us in, and of course, the ending is really exciting. I saw it in 3D, but I don't think 3D is necessary at all. Enjoy it - I can't imagine not.