Breaking stone slabs, Diet Coke and Mentos geysers, Frisbee dog.

Blending things you shouldn't, "Mad" Chad Taylor juggles chainsaws, and bare-handed bottle breaking.

Throwing water on a grease fire, the power of dry ice, the wonders of soap bubbles, a tablecloth pull trick.

The Fuel Girls' fiery breath, skateboard champion Greg Lutzka's killer kick flips, and Russ Byars' world record winning stone-skipping technique.

Pole-vaulting, the effects of a Taser and a jackhammer on the human body.

W.R. "Rusty" Haight of the Collision Safety Institute plays a human crash-test dummy, an archery demonstration is observed.

Observing a hummingbird, a professional pool player's skills, a samurai swordsman's deadly strike, and an accident involving tempered glass.

A closer look at free running tricks, observing water droplet art, and Non-Newtonian Fluids.

The freezing power of liquid nitrogen, what happens when bullets collide with various types of body armor, and a closer look at fireworks.

The sonic boom of a bull whip, no two wet dogs shake exactly alike, and a Boston Bruin's star to put two hockey sticks to the test.

The destructive force of power tools, the seemingly physics-bending motions of break-dancing, and why a bullet fired underwater goes askew.

A closer look at mountain biking tricks, ice skating, and the art of throwing playing cards.

Boston College cheerleaders perform various stunts, a closer look at how a baseball can shatter a bat, and an Olympic skeet shooter is observed.

Sharpshooting tricks are observed, a closer look at cooking with the Feasty Boys, using a Schlieren camera to capture sonic booms, and a boomerang expert demonstrated proper throwing techniques.

A world-class barefoot skier is observed, a Samurai Master returns to slice through various meats, the world's fastest drummer performs, and Jeff unveils his electrifying new art project.

What really happens in a movie fight scene, the secret behind bowling a strike, and the noisemakers behind a cicada and a rattlesnake.

The pain of body modification, the energy flow of a Wushu master, quick-stepping tap dancers, and what happens to a firecracker in a wine glass.

Trap-testing with Rev. Tommy Gunn and the high-flying Cirque du Soleil, exploring their inner stuntmen, and capturing the sophisticated simplicity of making music and weed-whacking.

Putting various items through a lawn mower and wood chipper; Cirque Du Soleil rehearsal.