The Google TV Blog announces the addition of the OnLive cloud gaming service, though for now this is operating in social/voyeur mode, with gameplay to follow:

Download the OnLive Viewer app, fire it up and check out my favorite place, the Arena. What you’ll see are gamers around the world playing top-tier videogames live, some of them approaching the visual realism of live action, and before long, you might even think you are watching a movie. Cheer (click thumbs-up) if you like what you see, and that cheer might appear on the screen of a gamer on the other side of the Atlantic Ocean. Try friending and striking up some chat. And, definitely watch some Brag Clip® videos, showing the best (and worst!) of OnLive gaming, with the most jaw-dropping and most hilarious moments captured from live gameplay.

As we do with most new platforms, OnLive is starting out with a Viewer on Google TV, so for now, you can just watch and use OnLive social features. But hang in there, OnLive is working closely with Google to enable full gameplay with OnLive gamers from around the world on Google TV. And more Google TV devices are coming, with OnLive built right in.