This is a third-party story, but it's so good I have to post it anyway.
Back when my now-wife was in college, she and her roommate took a film class for an elective, to have some fun with it. They showed Mulholland Drive, and I had already made my now-wife watch it so she knew that the Guy Behind Winkie's was coming. And she knew that her roommate didn't. So there they were, in a lecture hall with like 200 people, and my now-wife looks away right before The Scene, and happens to look over at her roommate.
When the Guy Behind Winkie's jumps out from behind the wall, the roommate jumps a foot out of her seat and lets out this bloodcurdling scream, like Ms. Scarlet from Clue. She then had to sit there for the next 2 hours (because that's one of the first scenes in the movie) with the other 200 people all judging her and wondering when she was going to jump up and start screaming again. I love this story.