Just saw this really weird late 70's Japanese horror film. Part of me wonders if, along with Twilight Zone and other haunted house movies, if it's part of the inspiration for Poltergeist-the whole thing about the ghosts posessing everyday objects, for one; but there's one particular moment where Georgeous's giant head pops out of a doorway to give some exposition that kind of reminds me of the scene in Poltergeist where the Beast pops out of the closet in the form of a giant skull in order to scare off Steve and Tangina's rescue attempt.
Granted, while Poltergeist is relatively grounded Hausu is pretty much completely crazy with not only the story but the way it was filmed.