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.

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.

You'll become gripped by the new Science Channel series Secret Space Escapes, profiling the true stories of astronauts who survived near misses and close calls.

Astronaut Jerry Linenger and Cosmonaut Valery Korzun recount the harrowing story of battling an intense fire onboard the Mir. Then things get worse for Lineger.

Jerry Linenger shares his personal "human" moment when in the midst of the firey chaos on Mir, he said goodbye to his wife and son.

Due to budget cuts, the Russians wanted to train Cosmonauts to guide Progress Cargo ships to the MIR by hand. The first attempt was a near-miss. This time we hear about the disastrous collision.

Astronaut David Wolf returns to the MIR, knowing the Shuttle-Mir program will be key in building the ISS. After a space walk with Anatoly Solovyvov, they return to the MIR and find the hatch won't seal. Oxygen rapidly starts to escape the entire station.

It took the Shuttle Program 2 1/2 years to fix the technical failures and get back to missions. The loss of the seven astronauts will never be forgotten.

On the first mission after the Challenger, the Atlantis takes off on a secret mission. After lift off NASA informs the astronauts of tile damage and the astronauts verify it's severe.

When astronauts attempt to connect a new section to the ISS, a deadly ammonia leak threatens the safety of the entire crew. Astronaut Robert Lee Curbeam Jr. must stop the flow of the dangerous chemical.

A seemingly simple spacewalk goes awry when astronaut Luca Parmitano discovers a mysterious fluid leaking into his helmet. Fellow astronauts race against time to keep Parmitano from drowning.