One night about a year ago, I had one of those freak-out nightmares where you think someone's in the room. I clearly remember opening my eyes and thinking "Oh, it was just a dream." And then my eyes focused, and there was someone standing in the doorway. I couldn't tell gender--male, or female with very short hair--and wearing some kind of military uniform. It was dark, and he/she was wearing dark grey, but I could see him/her quite clearly. And whoever it was, they did not like me, I could feel it. He/she started coming toward the bed, I closed my eyes, and when I opened them again, nobody was there.

I have the nightmares every now and then (stress-triggered), but the scary things have never followed me out into reality, before or since.