OnLive promises to bring PC gaming to any device with a fast Internet connection. Since the heavy lifting is done on the company's own computers and then streamed to you, the hardware doesn't need to be technically impressive. Starting on December 2, you'll be able to purchase a standalone console to access the service.
The microconsole comes with a single controller and one game download.
The technology is still new. Don't expect HD or the ability to play shooters or racing games unless you have very low latency internet. But I do see this as the future of gaming for the masses.