The MythBusters test if a large icicle falling from a two-story building can pierce the roof of a car.

At Jimmy’s Junk, inventors are looking for parts to complete what appears to be a jet-propelled merry-go-round. Later, shop regular Hale Storm tries to sell Jimmy an African Birthing Chair and a gigantic piece that could take the yard to new heights.

At Jimmy's Junk, an inventor needs Jimmy to hunt down a replacement engine for his surf cycle prototype. Then, two students hope Jimmy can give their solar-powered tank the firepower it needs to win a creators competition for a prize of $10,000.

At Jimmy’s Junk, things heat up when inventors need help creating a flame cannon and Hale reveals his own balls of fire. And when a team of lawn mower racers need a replacement transmission it’s up to Billy to turn a piece of trash into a trophy win.

At Jimmy’s Junk, inventors need help turning a fridge into a beer launcher, and Hale lands himself in hot water. Later a high school class’s hopes may go crashing into a watery grave when they ask Jimmy to come up with an engine for their hovercraft.

At Jimmy’s Junk, it’s all hands on deck to create a huge new sign for the yard, but when things are just about finished a team member really drops the ball. Later, emotions explode when the guys prank Hale, and Jimmy has a near-death experience.

At Jimmy’s Junk, a team of Punkin Chunkers need Jimmy’s help to take their homemade trebuchet to the next level, and yard regular Hale has found something that he thinks will blow Jimmy away. Then the guys get creative in recycling an old treadmill.

At HowStuffWorks, boss Steve invites a man with alien hand syndrome for an interview. The hand holds a grudge against Josh, and Jeri catches it all on camera. During the podcast the guys cover brain anomalies and disorders.

Josh and Chuck go on a police ride-along, but find t's nothing like on TV -- and nearly end up in the slammer. Meanwhile Steve considers adding a high-profile host to their podcast. The guys podcast about crime scene investigation.

At HowStuffWorks, construction stirs a bee hive. Chuck stands his ground despite being allergic, and Steve adopts a bee colony managerial style. During the podcast the guys cover hive intelligence, bee aggression myths and colony collapse.

At HowStuffWorks the star pitcher of their softball team gets injured, so Josh & Chuck attempt cloud seeding to rain out their next game. During the podcast the guys cover weather modification, from the space sun shade to using hurricanes as weapons.

At HowStuffWorks, concern over a common office cold turns to hysteria after news gets leaked about a local case of flesh eating bacteria. During the podcast the guys cover humanity's battle against bacteria and germ control

At HowStuffWorks, Josh and Chuck use a company-wide time capsule initiative to settle an old bet on time travel, getting physicist Michio Kaku tangled in the scheme. In the podcast, the guys cover time paradoxes and causal loops.

At HowStuffWorks, Josh & Chuck's topics are being covertly stolen. Though all the intel points to a rival podcast, a fog of cold war era suspicion invades the HSW office. During the podcast the guys cover spy recruitment, gadgetry and misinformation.

Kent's sleepwalking puts an embarrassing smudge on Steve's HSW growth plans, so Josh and Chuck do an amateur sleep study to find a cure. In the podcast the guys cover sleepwalking behaviors, sleep hacks and sleep deprivation.