I'm just gonna take a stab in the dark and say Oblivion?..just from what I've read and stuff...I haven't actually played so I wouldn't know from experience =)
I hate Oblivion. I think I've developed OCD or something and when games aren't on full settings it bugs the crap out of me. Therefore, I hate it. Fun game, but I still hate it.
Also, if something is out of place, I have to put it back. If something isn't lined up with everything else, it becomes lined up...