I haven't got OCD with words ect, just certain things like I can't have my games/DVD's out of line on the shelf, I have the dark cases gathered together with the white/brighter cases on the other side all bunched together, just little things like that.
In the 50's they would have just said you were neat.
One of my mates has if fairly bad, switching lights switches off a certain amount of times, knocking doors three times before opening them, this goes for presses and drawers as well, he wont walk in a door first either, loads of other shit as well.