This film is technically a "pre-Ghibli" work: Ghibli as such didn't exist when it was made. You can, however, clearly see where Miyazaki's style and preoccupations came from. I am a part-time science-fiction fan, and it has always saddened me to see that while reams of intelligent SF are published (consider "Grass", "The Sirens of Titan", "A Fire Upon The Deep", "A Requiem for Homo Sapiens", "The Cyberiad", Cordwainer Smith and many more) Hollywood generally takes the line that SF on the screen either means Star Wars (lots of whizzy spaceships, weird aliens and battles) or Alien (horrible monsters picking people off one by one.) Both of those are good films, but they have been far too much imitated because of their success, and the other things that written SF has to offer never seem to have made it to the cinema. "Nausicaä", however, is an exception. It is a film which, like a good SF story, always has something to reveal, introduces you to a well-designed and fascinating world, and plays out through the actions of properly-developed characters. If you want to see space battles and mindless action, or people being horribly murdered by alien creatures, this is not the film for you, but if you'd like to see some SF written for the heart and the mind instead of just the senses, I can't recommend it too highly--except to say that "Laputa: Castle in the Sky" may be even better.