Mehdi Hercberg and Raphael Seguin's art project is an interactive video installation called "Motor Karaoke".
In a nutshell, it's a bike race that's powered by human scream. The louder you scream, the faster the bike goes on the screen.
Maybe it should be called "Scream-a-roke", instead.
http://grogore.free.fr/event/motorkaraoke/motorkara (Thanks Mehdi!)