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

Team Ethos is amping up to 9000 pounds of tension.

See American Chucker in action!

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

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

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.

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

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

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.

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

Launch-Ness Monster is the talk of the trebuchets.

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

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

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

Team NASAW tells Mythbusters' Grant Imhara what makes their new trebuchet design truly unique.

Boys love to CHUNK, but what about the ladies? Can an air cannon champion defend her title against the "big boys" of Punkin Chunkin? Check out this sneak peek from "Road to Chunk 2011."

He came, he conquered, and now he's back for more! Does Yankee Seige's "King of Trebuchets" have what it takes to chunk it ... good? Check out this sneak peek from "Road to Chunk 2011."

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

Punkin Chunkin icon Fat Jimmy wants a chunker of his own. If he can pull off his complex build, it will be high times for all.

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

There's a new team in town. American Chunker comes ready to rock the Air Cannon category. This team did their homework and spared no expense on their impressive machine.

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

Check out the first launch in this year's Punkin Chunkin competition by the centrifugal machine, United Flingdom.

Over two days the Science Channel filmed a time lapse of the setup at Punkin Chunkin all unfolding for you in about 90 seconds. Sit back, relax and check out these mega machines!

If you're a playa, a hustler, or just want to see a gourd soar at 400 miles per hour, then THIS is the competition for you! Tune in to PUNKIN CHUNKIN, Thanksgiving night at 8PM E/P.

Lock and load. Sounds simple right? Well, these chunkers are finding creative ways to take pumpkins to new heights. Mike Senese explains how a torsion catapult works... or doesn't!

An old favorite, Yankee Seige, has retired from competition. But one member of their team vows to keep on chunkin, with a new and improved twist on the trebuchet. Can Tired Iron live up to the legacy of Yankee Siege?

Long barrels might seem more impressive, but the truth is bigger is not always better, no matter how cool it looks.

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