Oh, I forgot about the Exorcist.
The Exorcist messed me up
bad, but not in the usual way. I had a brain tumor as a little kid in the late 70s, and the medical diagnostic sequence with the 70s-era equipment gave me some really visceral flashbacks
And the sudden frames of whatever that was in the demon makeup here and there (like in the dream sequence) scared the blue fuck outta me.