The film sure looks like Avatar. The 7-volume manga series, on the other hand, feels more like Dune, especially after the second or third book. It goes much deeper into the ecological and political history of Nausicaa's world, shoving her unwilling into the middle of a world war and shaping her to become a different kind of Messiah figure than the cute version of the film. The landscape outside of the Valley of Wind is far from the lush green of Pandora, and in fact is just as deadly as Arrakis is. Also, giant worms.

But if James Cameron takes an interest in the Nausicaa universe, he'll probably develop an actual flying contraption that looks and works just like the moeve! Absolutely no complaints about that, either. :)