The guys from Discovery's "Moonshiners" have a challenge for the chunkers: destroying a still.

Yankee Siege sets a world record for largest pumpkin ever chunked by a trebuchet.

Air cannons take aim at the four-inch steel walls of a trailer in this challenge by the guys from "Gold Rush."

Watch a piano hit a high note as 58,000-pound trebuchet Yankee Siege sends the instrument flying.

The guys from Discovery's "Fast N' Loud" challenge the chunkers to sling a car.

Smokin' claims it can shoot up to 20 pumpkins in a single scattershot. How will this air cannon do on an accuracy challenge?

Team Ethos is amping up to 9000 pounds of tension.

See American Chucker in action!

Kari gets up close and personal with Bad to the Bone.

Meet the long-suffering wives of Punkin Chunkin competitors.

Meet Punkin Chunkin's youngest competitors.

Launch-Ness Monster is the talk of the trebuchets.

Shooda Noed Beter is a machine unlike any Punkin Chunkin has ever seen.

Excitement as Brian Labrie wins Punkin Chunkin after three years of defeat.

You'll never guess when Punkin Chunkin competitors do when they're not at the Chunk.

Roman Revenge catapult team captain Kim Moore was knocked off a ladder when their machine malfunctioned in the first round.

Fans at The Chunk bring their own engineering masterpieces to the field each year.

These returning champs have modified their machine. Can they go even further? Team captain Greg chats with Kari about their modifications.

Team Chunk Norris added some height to their machine for this year's event. Could this modified catapult be a winner, or will their pieing nightmare come true?

This video was made by embedding a camera inside a pumpkin and chunkin' it high and far. You won't believe how cool the view is up there.

Don't miss the Mythbusters marathon on SCIENCE: Wednesday September 26 beginning at 9AM.

Can an non-newtonian fluid deflect a bomb blast? Testing that myth means Brian and Jon are mixing up some oobleck.

Our mullet-wearing hero discovers a mail truck full of TNT. MacGyver has a nearby cement truck dump its load onto the truck to smother the bomb. But would it work in real life?

Adam and Jamie tackle the one explosive technology they've yet to come across: landmines. Can a minefield really be safely traversed in a hovercraft?

The guys answer your questions about the explosion special! What was Adam's favorite explosion? How many hovercrafts have they made?

Adam and Jamie build a ginormous trebuchet without any bolts or screws. The only thing holding this baby together is good old fashioned duct tape!

What's the secret behind a perfect trebuchet? Adam tinkers with his mini medieval weapon to show us.

Adam and Jamie get into character and figure out whether the buoyancy of the wooden board would allow for both Jack and Rose to survive the freezing temperatures in Titanic.

Ancient Chinese warriors really wore armor made from paper? Yes. Yes, they did.

Tory and Buster ride the rocket powered surf board on a still body of water. Hang ten!

The gang puts two separate cars through rounds of performance tests. The catch? They’re running on moonshine instead of gasoline.

Jamie wants big boom, and he'll get one with this booze driven myth!