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

These lemon tarts have a shortbread shell, creamy lemon filling, and buttercream. Fun fact: lemons are believed to be a hybrid between a sour orange and a citron.

See how a master chef creates this delicious Mediterranean dessert.

These soap carvings are far too delicate to be used on scrubbing duty. Check out how these beautiful sculptures are created.

This variety of baklava is made from kataifi (shredded wheat dough) instead of phyllo dough.

Sit back and enjoy the factory fun with this How It's Made: Cremation Urns video.

Ever wonder how Audi makes their sleek, stylish and green cars? Find out now!

Car doors have come a long way over the last century. Today, they are smaller, stronger and even contain electronic gadgetry.

Nut crackers aren't just functional devices. They're also a favorite holiday decoration! Find out how nut crackers are made.

Stone wool insulation was originally discovered by...an erupting volcano!?!

Surgical rubber gloves were first implemented at Johns Hopkins Hospital. Watch this video to see how rubber gloves are made.

Car headlights are created separately from the car, with durable plastic and reflective aluminum for maximum efficiency. Manufacturers can alter certain features, but ease of changing the bulbs stay the same.