If you're a fan of Skinny Puppy...
...then you will LOVE this movie. Nearly every sample the band used in its first two albums comes from "Hell House."
If you don't care about Skinny Puppy but like horror cinema, you should still see this movie. Though it falls apart towards the end, the first half is very atmospheric and thoroughly creepy. And as hokey as the ending is, I can still appreciate the effort to use science vs. spirituality as the central conflict of the film.
Also, while the plot ultimately fails, the acting and direction are outstanding. Not as good as "The Haunting of Hill House," which has an almost identical premise, but still definitely worth seeing. Especially if you like early Skinny Puppy.