Looks interesting. I'll have to check and see if netflix has this. Seems around the same time as Exorcist. Though the comments dog it as a rip off, I didn't see it more than another demon possession movie. Which again I find interesting. Perhaps as it holds no horror for me.
I think Omen might be one of the best movies of this category though.
"To alcohol, the cause of and solution to all of life's problems." -- Homer Simpson
"Paradise is feeling warm, when the world is feeling cold." -- Roger Whittaker