Thanks,
nope, I didn't - wish I did though xD -
It is an unrealesed song called 'The Believer' that the band played during a soundtrack once: http://www.youtube.com/watch?v=93_Q6e7iyRQ&feature=related
And here is a very nice cover where you can hear the lyrics http://www.youtube.com/watch?v=U0kbM1sIeyg