Brooklyn Bedding claims its memory foam retains its shape through anything, but the makers of the Dynapac CC722 think this bedding company is just dreaming. The 38,000-pound double-drum roller sets out to flatten this foam once and for all. Next up, one of the world's most powerful blenders, Blendtec, has blades that spin at 300 miles per hour, but can it survive the force of the B.A.S.H. sledgehammer? Later, it's a battle of dog versus machine.