I think i'm in love with the Paddle Saw,though the Air Horn is pretty fun as well. The two weapons I enjoy using the most, however, are probably the wooden barrels and the brick. Watching a crowd of zombies stumbling around in wooden barrels is fucking hilarious, even more so if you then try and knock them down with a bowling ball. Epic zombie killing.
The brick is surprisingly powerful, though it's durability is pretty terrible. I just like how fucking gritty it is, and the sound of exploding heads when it connects.
And no, "The Brick" is not the new name for my penis. My penis already has a name, thank you.