Luckily our office is pretty good about keeping the fridge portion clean. The freezer fills up pretty quick and no one ever fills the ice trays after using them. My biggest pet peeve about the freezer is the unknown person that manages to spill coffee grounds in the ice cube trays right after I add water to them; I don't want my drinks with ice tasting like coffee! The microwave is always nasty and to the point that I don't even use it unless I'm heating water for my hot chocolate. The coffee drinkers also spill all over the counter when stirring their drinks and they NEVER wipe it up.

Ah, it feels good to vent.