That annoying house mate that can't stand seeing a few dirty dishes on the counter for more then a day or two. The Dish Nazi, when he catches you, will even become enraged that you keep dishes in your room even though you are just trying appease them by keeping the kitchen a little cleaner. The Dish Nazi will also clean everyone's dishes on the pretense of being "nice" when really they are just cleaning for peace of mind.
Bob, out house Dish Nazi, saw I had a few bowls in my room... The look that came over him made me think he was either going to have a nervous break down or burn me at the stake as a witch.