Well, the Front Row i'm talking about is in fact the AppleTV's patched Finder.
I've just modified its .app name, its info.plist inside Contents and its Finder binary inside MacOS.
Now the system believes that it is the standard Front Row.app it uses when i press the apple remote menu button.
So i can still use my original OS X Finder when i quit "Front Row"
(you better have to stop any media playing before quitting to avoid file corruption).