This is GameTime, a plug-in for MediaBrowser that lets you browse through your Emulator and Game collection on your PC, from inside Media Center.
In this video you will see game-time being used in 4 themes in media browser to give a feel for how the plug-in looks and operates.
The Games being played in this video where not truly launched during the recording process. All the game clips you see have been edited in.
When a emu or PC game is launched, media center will minimize and the game will then go full screen and you can begin to play. Once you exit the game MC will return full screen.
If your interested in trying out Media Browser for the first time you can find it here at it's home page. media browser
To get to the help and support thread for GameTime please visit this link. GameTime 126.96.36.199 Now in RC - Media Browser Community Tracker
And lastly the database site that GameTime pulls it's metadata from is called theGamesdb.net
Which is a open db and relies on people like you to upload content. So if your into gaming and would like to support GameTime, please consider taking a little time and contribute some artwork to the new db, and help make GameTime the best Game Browser/Launcher out there!