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.

Meet the long-suffering wives of Punkin Chunkin competitors.

It's a dangerous sport, but so far there has only been one fatality.

Meet Team Chunk Norris. They're a rookie team in the trebuchet division this year. Like the man who inspired their name, the sky is not the limit. Team Chunk Norris is.

See American Chucker in action!

American Chucker gives the crowd a scare when their pumpkin misfires.

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

The pressure is on for team Chunk Norris as they take their first shot at The Chunk.

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

Launch-Ness Monster is the talk of the trebuchets.

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

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

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

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

Team Ethos is amping up to 9000 pounds of tension.

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?