I stumbled upon this while reading Gizmodo this morning.

http://www.clanofthegraywolf.com/

It is a group of people playing 1,000 consecutive Rock Band songs (Started Yesterday, expected to end Sunday Evening!)

They are absolutely crazy, but doing it for a very good cause, a charity called Child's Play that helps hospitals (including CHEO) provide sick children with games and entertainment during their stay at the hospital.

Check them out, they have a live feed of their 'concert' and a place where you can donate, along with more information on Child's Play!