Stories like that just peak my interest I guess. I've never known anyone with some of the scarier mental conditions. I did meet a guy that supposedly had a condition that caused him to do weird shit like that with no memory of it in an army hospital one time.. When I was in the waiting room he walked in, looked directly at me then turned around and walked back down the hall...Then he walks back into the waiting room like 3-4 minutes later, crawls under the couch and just passes out.. A little bit after one of the staff comes in looking for him, and I have to help her move the couch so she can wake him up.
I talked to him about it later because I was still in the waiting room when the staff held their "group sessions" and he told me he didn't remember any of that, and he didn't even remember getting up off the couch in the first place, but he thinks he was sleepwalking or something. Thing is his eyes were wide open so it was pretty creepy.