I don't believe in supernatural experiences, but I'm not dogmatic. So, here's a spooky one:
One night I was alone in the room watching "The Mothman Prophecies" on DVD. It's about a woman who has some vision of a dark kind of butterfly (or bat) before she dies in an accident, and then her husband sees those visions again; something like that (it was some years ago). In the midst of the movie, my mother from the nearby room, who had been sleeping, suddently wakes up screaming "My God, Jehovah". I go immidiately into the room, and ask her, what's wrong? She says she saw something in her sleep, that scared so much that she woke up. I started to get anxious and asked "What was it?".
"I don't know, something".
"What was it, tell me!".
"It was something black, with wings, like a bat".....
The thing is, even after that incident, even after I knew I shouldn't be watching this 'evil' movie, I went back to my room and continued seeing it to the end... Nothing happened again. So yes, I believe it was a coincidence, since it wasn't doublechecked. It's been 8-9 years now. Still, as I write this, I get the shivers...