I have probably shared this Ambien story on SF before, but it bears repeating.
I was taking Ambien for sleep at one point. It would take about an hour for it to kick in. My company was hosting a cocktail party in a hotel for clients that ended at 9pm, so I took an Ambien at that time. Our clients were gone and we were just sitting around chatting. I was planning on going back to my room soon.
Fast forward to the next morning, and when I woke up I noticed the deadbolt on my hotel room door was unlocked. Strange, but maybe I forgot to lock it? I went downstairs for meetings with clients, and the woman who worked with me asked if I was okay. I asked why, and she said "we were all sitting around talking and your eyes just rolled back into your head and we thought you were having a seizure". A long-term friend walked me back to my hotel room. I sent her a message afterward letting her know how embarrassed I was and thanking her for her assistance. I evidently had enough forethought to put on my sleeping clothes, but I woke up the next morning not remembering anything.
My business colleagues got years of laughs from my "Ambien story". It is pretty scary, but I laugh about it now as well.