I was afraid of ghosts and all as a kid, lol. But after I got over that, as a teenager, I was lying in my bed once trying to fall asleep and rolled over and saw what looked like an indistinct figure standing over me. I kinda looked at it for a good few seconds and then turtled under my covers (like that would do any good). It never happened to me again but it was a pretty vivid memory and I never could find a way to dismiss it.
Oh yeah, and years after I left the house, my mom told me she was napping in that room when she felt the bed sink as if someone had sat in it, but when she opened her eyes, no one was there.