I know it's old, but there are still some who have not seen this. It's a wonderful music video by John Boswell of the website Symphony of Science. John takes clips from Carl Sagan's Cosmos, along with footage of Stephen Hawking, and masterfully works it into original music, using autotune. The result is something that shows the raw passion and love for science that Sagan had, and it's beautiful. Be sure to watch all John's videos on his site, symphonyofscience.com.