Similar to the Digital Storm system, the Maingear Vybe SuperStock is a more compact, marginally more affordable gaming desktop. It's not quite as fast as the Digital Storm, but Maingear offers perhaps the best online shopping experience among boutique PC vendors, which will satisfy anyone interested in customizing his own gaming PC.
The first true gaming-oriented all-in-one, Lenovo's IdeaCentre B520 is a speedy, fairly-priced do-it-all home entertainment PC. It even supports Nvidia's 3D Vision technology, and includes a set of the required glasses. It's not quite as fast as a standalone gaming desktop at the same price, but this system provides a capable, self-contained gaming experience.