I once spent about fifteen minutes playing with a scantily clad dead body. I'd only just realized that you could drag corpses about, so naturally I just began tugging the poor dear this way and that and draping her over things and marveling at the fact that I could position her arms and legs individually and generally being a colossal weirdo. I still have a fascination with dead bodies in Skyrim. Probably not a healthy one.
Oh my God, this. There's a point early on in Markarth where you end up with a dead guy and girl (attempting not to spoil) on the ground. I looted them naked and used the drag function to make one dance for the other NPCs standing around ("Oh! What happened?")... Then I flipped the guy on the ground face up, and dropped the lady suggestively on top of him with a somewhat maniacal cackle. Not one of my finer moments, I'll admit. Pretty sure my girlfriend thought I was deranged. >.>
Unfortunately, the physics engines keep me from decorating my house how I want, like I did in Morrowind, so my macabre table full of human flesh, hearts, and giant's toes bedecked with flowers, fine booze, a platter of sweets, a bloodsoaked rag, and a full set of Dwemer placesettings... won't stay put.

I also had a tradition in both Morrowind and Oblivion of my vampire keeping a silver daggar in her possession at all times. Both my 'main' characters also always carried a gold kanet flower on their persons. I haven't picked a suitable replacement in Oblivion, but I'm thinking dragon's tongue or nightshade for Skyrim.
Also, I talk to myself. Hang me.
Kudos if you know that quote.