Games! Games! Games!

or "Geekiest Music Performance. Evar!". It's a performance of various Nintendo theme tunes by an a capella group called Redefined who are from the University of Wisconsin.

It's right up there for geekiness with Mario On Guitar and Mario On Piano for geek status but Redefined's A Cappella Nintendo Medley wins for me because it includes a cool rendition of the Zelda theme tune and quite a few other favourites. It doesn't hurt that the games are being acted out at the same time - the Tetris one is class!