also, there is a big difference between that movie and astral projection. one is found on the astral plane where spirits and ethereal entities exist while in that movie the world is soley based on the mind and what that person percieves in their mind. so basically, no, that movie is not a fiction form of astral projection but another study all together on its own.
Yeah, it was lucid dreaming. I think it was a lovely movie, and who knows, there could be a business like that at some time in the future. It'd be nice to see dreams given a more important role in waking life :)