Endorsing a blockbuster isn't something I'll do often, but Cameron got this one right. Visually stunning, with a grand mythic plot we'll sit through over and over, and very few false notes. If you grew up reading sci-fi paperbacks and made it to this golden age of animation, it is pure pleasure to watch another world envisioned this well. The physics of Pandoran geology are pretty questionable, but the motion in the flight scenes is believable without quite inducing vertigo even in 3D. Yeah, go see it.