I hate horror movies, but The Mothman Prophecies honestly was so scary that it affected my life in a really negative way. I couldn't sleep without my curtains closed and my desk-lamp on for TWO MONTHS. The problem with this movie is that whether or not you believe it is true depends on whether or not you believe the eyewitness accounts of the people who said they saw it. If you haven't watched the movie, watch it and then watch the documentary on it afterwards. It's bloody scary.