"Dual Saw Shuffle" DualSaw -- a dual-bladed circular saw with blades that revolve in opposing directions allowing a cleaner cut without kickback. It was invented by a French firefighter who came up with the idea for his product after a fellow firefighter lost an eye using a circular saw in a rescue attempt. Shuffles -- microfiber pads that are worn on the feet and used as a mop. Original air date: April 22, 2009