I had an ex that would take it, go to sleep, and then an hour later get up and cook dinner, eat it, talk to people (in a disjointed fashion, like in the video), change clothes, feed the cats and dogs, watch TV (vaguely) ....
The next day, she would remember nothing about anything after she went to bed the first time. We actually video taped her once, to prove to her that she was sleep walking.
I've got to be honest with you, this kind of think scares the badungas off of me. I figure if people can walk, talk, drive and do all kinds of other things while under the influence of certain sleep drugs, what's to stop some sleep-walking rage-a-holic from killing someone? Makes me wonder if that's actually happened yet, and if so, what was the defense, and how would you prove it?
Oh Krikey, I just did a web search and it DOES happen. YIKES!