If you're in the mood for getting spooky, you can't go wrong with a George C. Scott double feature: The Changeling, and Exorcist 3.
If you saw the second exorcist you probably wouldn't have much hope of a third one being any good, but it's great!
William Peter Blatty, who wrote the first, actually wrote and directed the third. It definitely shows its age a bit here and there, but overall it is a super strong horror film with a lot of great moments. See it.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko