You think your Mac Pro is hardcore? No. This is hardcore. The Antec Skeleton ($180) is a futuristic, open-air PC enclosure that keeps your components cool — in more ways than one. Made of 0.8mm cold rolled steel, the Skeleton has a front 92mm fan, a top three speed 250mm fan with multicolor LED customization, layered component trays, rackmount quality side rails, 7 expansion slots, and room for 4 drive bays.