Well, here's the creepiest one I can remember:
-I'm with my friend (a person who doesn't exist in real life) and we're at my middle school at night, trying to track down a serial killer. We split up, for some stupid reason. I get some kind of telepathic flash of my friend being in danger in the library.(It's a dream, just go with it) When I get there, I just a cloaked figure crouching over...something I can't make out. It's blurry. The figure slowly gets up and turns around. It's my friend, but his face is emotionless, and he's too tall. (Also he's wearing a cloak that he didn't have before). I find I can't look anywhere but at his face, as he slowly walks towards me. The thing in the background is still out-of-focus, but I can make out a red blotch on it. As my "friend" gets closer, a trickle of blood runs down the side of his face. He raises his hands out in front of him (big hands, with white gloves) and as he moves, his face slides right off. Underneath it, there's what looks like a silver mask of a face without a mouth. There's holes for the eyes, but there's nothing behind them, just blackness. The silver is stained with blood. As I walk backwards (I still can't look away) I trip over something and fall. I'm finally able to look away from the killer, and I see my friend's corpse lying in the same position I'm in now. The killer reaches down and rests his fingers on the sides of my head. His hands are so cold it's painful. He pauses for a moment, and I realize beyond a doubt that there is nothing behind the mask, that it is the closest thing the killer has to a face. And he wants a new one. In a strange way, I almost feel sorry for him. Then I wake up as his fingernails dig into my skin.