Haven't seen the movie (I'm sure it's right up there with The Godfather and Bio-Dome), but I do know an awesome new monster when I see one. Zombie beaver, you're ready to do battle with a party of adventurers.
HD: 12 HP: 77 AC: 15  Attack Bonus: +6 #Attacks: 3 Damage: 2d6 (claws x 2) and 4d6 + special (bite)
Special Attack: a zombeaver's bite is never a good thing, due to risk of infection. Successful bites require a saving throw. Failure means that one is infected, the bitten individual takes 1d4 constitution damage every round until healed by supernatural or divine means.
Special Defense: the zombeaver is undead, so the usual immunities and such apply. If a cleric has never encountered a zombie beaver before, then he cannot turn or destroy it. Also, this thing is huge and can swim like the dickens!
Authored by Venger Satanis