If you have not heard of the virtual choir project I thought you might enjoy these. The 2.0 piece had 2,000 submissions from 58 countries. The 3.0 piece had 3700 something videos submitted from 76 countries. They were all mixed together into the final piece. I actually like the first one better but it is an amazing project?
http://www.youtube.com/watch?v=6WhWDCw3Mng
http://www.youtube.com/watch?v=V3rRaL-Czxw&feature=related
http://www.youtube.com/watch?v=6WhWDCw3Mng
http://www.youtube.com/watch?v=V3rRaL-Czxw&feature=related