That would make a great name for a rock band, yes?
I didn't make the Monk Spade thing up. It was Max Brooks. I'm just trying to capitalize on it. You know, when you sell something as obscure as Monk Spades, you do whatever you can to sling 'em.
Here's a reference from Zombie Wiki:
Monk's Spade
A Monk spade, also called a Shaolin spade, is a Chinese polearm consisting of a flat spade-like blade on one end and a crescent-shaped blade on the other. In old China, Buddhist monks used to carry around spades for two purposes: one was to bury any corpses they came across on their travels and give them Buddhist rites; the second was to fend off bandits if attacked. Eventually, they were stylized and given a crescent blade on the other end.
The weapon is most effective against the undead when used as a thrusting weapon (particularly to the face); it is slightly less effective as a slashing weapon, where attacks to the neck can sever the spinal column. Max Brooks controversially calls this the best hand-to-hand weapon in event of zombie outbreak.
Pros
Essentially a polearm; very effective for keeping zombies out of reach.
Has two blades on either end so you can use both of those in combat.
Cons
Bulky and sharp, so carrying it around will be hard.
Rare.
Weighted and used differently from many other melee weapons. Somewhat steep learning curve.