haha i went to that thing once, its frickin hilarious. buncha hicks trying to throw a pumpkin as far as they can, and theres all sorts of different classes for ways to throw em' and i think the only rule is you can't use chemical propellants. there are like big catapults and stuff. i think the big air cannons get them close to a mile.
check it out: http://www.youtube.com/watch?v=q7KQJ3lAFHI