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.

Kari investigates the holy grail of Punkin Chunkin: the one mile mark.

Kari table dances during the Punkin Chunkin panel at the 2013 New York Comic Con!

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

Third time's the charm for Shooda Node Beter and their human hamster wheel.

Team Ethos is amping up to 9000 pounds of tension.

Watch father and son are pitted against each other in competition. Who will win mom's support in this epic battle?

Returning champions Young Glory III made some adjustments to their machine in the off season. Will Young Glory III's new barrel help them earn back-to-back titles?

The Great Emancipator team added a backspin nozzle to their air cannon this year. Will this new gadget push them over the top?

Could this huge toss from team Onager be enough to win the division? Captain Rob chats with Tory before the first round of the event.

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 How It's Made marathon this Memorial Day, only on Science.

See how a master chef creates this delicious Mediterranean dessert.