This is not at all RPG-related.
I have been drawn into the most bizarre youtube series ever, called Marble Hornets. I don't know how to describe it, other than that it's not very creepy until you're alone in your room, trying to sleep, and trying not to freak out that a faceless, silent thing is watching you through your windows, or is in your room standing over you.
Start from the introduction. It takes a few entries to get really creepy, but when it does, it'll lurk in the back of your head every time you're alone.