Stupid Monsters someone was paid to make = the best job ever.
See how many you have used. Hat tip to Shannon via his tumbleblog.
Not on the list, but I was always confused by the "Berserker" as a monster. From the description, there are bands of barbarians who just wander around and wait to get in fights so they can go berserk. That's all they do! There's no mention of any other activity.