Came here to post exactly that. Just yesterday I screamed "red rum" and was freaked out by the vision of those twin girls in the hallway.
When I was younger I remember a movie called "Don't Be Afraid of the Dark" that freaked me out for a while. All I recall now is a woman being carried away by some goblin creatures that lived in her fireplace or something, and she was trying unsuccessfully to use her camera flash to ward them off, because they didn't like the light and only came out in the dark--hence the name. Haven't seen it in probably 35 years and now I'm finally curious enough to see it again. Gotta try and track that down.