I finally saw Avatar last night and thought is was a very good movie. Of course I don't think Avatar is the end all be all movie of all time. We already have that movie in Star Wars.

It felt to me a lot like the Union Soldiers vs. the Indians.
I also felt that the 3D was unobtrusive, not gimmicky, and very well done. Instead of items being off the screen and in your face like so many 3D movies, Avatar gave the feeling more of depth of the environment if that makes sense. The high shots or flying shots really gave you a sense of that depth. I would say they left a crack at the end of the movie for a sequel. I would rather they not do that though. The story was a great package by itself and having a sequel might ruin this movie. Only time will tell. If Hollywood has there way, I am sure there will be a sequel just because it was such a cash cow for them. I would recommend this movie.