B- the film is technically flawless but the climax is loosely thrown together, not enough thought went into the "how" of it all. It's very reminiscent of 'The Abyss' but unfortunately I've already seen 'The Abyss'. I really liked the idea of the Na'vi being so intertwined with their environment but it was a bit ham fisted to suppose that everyone gets downloaded to the Gaia mainframe when they die. I'm sure they could have come up with a better excuse to get Jake into his avatar permanently, he could have made his avatar save him and inadvertently the avatar pony tail tendrils could have jack into the life pod or whatever. You may not totally like it but you have to see it and I would definitely see it in 3D.