Brook, Brian, and investor Marc Portney test out motorized roller skates users can strap to their shoes, a water filter that works like a French press, a 360-degree infrared surveillance device, and a gun that lets people shoot flies with table salt.

Marc, Book & Brian scrutinize four big claims: a bike that can ride on water; social robots with personalities; a device that improves the reaction time of boxers; & a product claiming to give its user a healthy amount of sun without getting burned.

Experts Brook and Brian help Marc decide if he should invest in a brain-controlled toy helicopter; a non-toxic, liquid stain repellant; a fetch toy that dogs can control by themselves; or an airbag vest for motorcyclists.

Brook & Brian help Mark vet four innovative products: a remote controlled lawn mower; a revolutionary digital guitar; an indestructible flashlight that powers your electronics; & a bike helmet that records brainwaves and stress levels when you ride.

Brook and Brian help Marc vet the claims of four new products: a shirt that claims to change colors as muscles heat up; a non-glue that dries at your command; a robot that clears disaster areas; and a product that hopes to revolutionize prosthetics.

Brook and Brian help Marc vet four new products: a vehicle that allows cyclists to reach highway speeds; a robot programmed to its owner; an electric fan that promises a red-hot grill in minutes; and the first-ever indestructible shoelace.