OnLive is a video games streaming service where you don’t need a hi-spec device to play, it just streams the game over the internet. One of the best ways to experience it is to play it on your home theatre PC on the big screen, you can even use an Xbox controller to play the games.
So if you have he service and want to use it on your HTPC it would be great to be able to launch OnLive from Windows Media Center. This is exactly what Dan Williams has done using Media Center Studio, he has got the shortcut in Media Center and has produced video showing how well the integration works.
If you have have OnLive this is a great way of launching it.