Mario Brothers Music on Piano - performed by a blindfolded guy. Delightful! Then he takes his blindfold off and really gets into it. Via Boing Boing. This is a 7.6MB Windows Media File. Download choked for me at first, but on retry came down seamlessly, so you should be ok. Safe for work unless they hate Mario Bros.
And towards the end a cellphone starts ringing which pissed me off, but it's still a lovely bit of bumf. This dude is really good, watch his hands start flying. Hope you enjoy.