This website is pretty incredible. I haven't played around with it too much, but there are 20 different clips all in the key of b flat so they can be played all at once or only a few, and the timing doesn't matter. It is an amazing feat of musical comradery.
Enjoy the link here, and feel free to play around with it.
In a related news, I saw the documentary It Might Get Loud last night. It is a documentary about the electric guitar and it follows arguably three of the best guitarists from three generations: Jimmy Page, The Edge and Jack White.
I loved this movie and each person's story with how they found the guitar and how they were attracted to it and their influences and songwriting process was great. I'm sure there are tons of footage that wound up on the cutting room floor and can't wait to see that on the DVD someday.