Revision3 the people behind web shows such as , , , , and HD Nation have developed a Windows Media Center addin so you can watch their content directly from Windows Media Center. It looks like its part of their stragey for bring there shows to the TV as they are also targeting Apple TV,Boxee and Roku boxes. Its good to see content creators supporting Media Center as we know its a great way to get web content on to the TV.
More info and the download links at revision3.com/leanback_windows
Don’t forget there is the official TDL app for Windows Media Center availaibe at MadeforMediaCenter.com