The following is completely true.
I am on my third playthrough of Skyrim (PS3) and am a level 42 Nord; I started this third playthrough because alcohol ruined my character's life on my second playthrough.
My wife was out of town a month ago and I went out with some friends and got pretty hammered...ok, really freakin' hammered. I cabbed it back to my house and figured: "hey, wife isn't home, I can play as much Skyrim as I want." I passed out while playing and when I woke up the next morning I didn't remember anything I had done in the game (swear to the gods).
My character was standing in my house in Whiterun wearing nothing but a sword and a Daedra helmet, literally everything from the tables and shelves was on the floor, Ysolda (my wife) was dead, the "Do you get to the cloud district very often?" guy was dead in the alchemy lab area and Lydia was lying dead at the table in my room. I figure it must have been one of those glitches where you enter your house and the NPC talking to you follows you in. In my drunken state, when I "arrived home," I must have assumed Ysolda was carrying on an affair with that dude so I killed both of them and then run upstairs and killed Lydia.
I checked my inventory and had over 20 stolen items - everything from leather strips to clothes irons. I figured I should unload some of the stuff but when I went to Belefor's, the place was trashed and there were three dead bodies behind the counter (Belefor included). No guards were after me (I must have abused my Thane priviledge) so I kept playing, but when I fast-traveled to Markarth, all the guards started attacking me on sight. I ran into the Silver-blood Inn, there were about 7 dead people lying around the bar. I figured I needed to cool my heals so I went to Hjerim and found, again, my house trashed, my house carl dead and a pile of axes on the floor - a pile. Ok, I need to split again so off to Honeyside. Garden was ravaged - everything harvested yet no food in my inventory, at least 6 chickens lying dead with arrows in them, two bodies in my back yard (turning into compost I suppose) and another dead house carl.
I wanted to laugh but I was like really questioning if this was unhealthy behavior. I layed off the game for a few weeks.