Powered by coal and wrapped in mahogany, the Steam-Powered Gaming Cabinet is a gorgeously retro gaming rig that would look right at home in Rapture. It's just for giggles, of course, but ThinkGeek has turned fake products into real ones before. Although a Steam-powered console wouldn't be practical, the associated controller at least looks plausible—and pretty sweet all on its own.
Nixie tubes would probably be a bit much for an actual gamepad, and the ergonomics of the handles look suspect at best. But I still want one.