OnLive is a platform upon which PC games can be played, where processing takes place "in the cloud," totally eliminating the need for discs, expensive hardware, and system customization on the user's end. It currently lauched with 16 popular PC games, including the resource-hungry Crysis. Any broadband-connected PC supporting the service's browser plug-in can access and play PC games.
The company even offers what it calls the Onlive MicroConsole, a device no bigger than a Nintendo DS which plugs directly into the TV and accesses the subscription gaming service. The service requires a modest 1.5 Mbps connection to deliver the systems base-quality experience, and for the experience comparable to a full-power PC gaming rig, it requires a 4 to 5 Mbps connection.
More info: OnLive.com