An old friend of mine from college sleepwalks/talks.
Years ago, I was sleeping on the floor at his place after an evening at the pub, and woke up in the middle of the night to see a pair of feet right by my head.
Looking up, he was standing over me, blankly staring straight down at my face. Very slowly, he asked "Is there anyone here with curly hair?". I just said firmly "Go back to bed" and he slowly turned and shuffled like a zombie back to his room.