Ok I know that was a crazy title but you'll get it if you read this great post.

http://wesnerm.blogs.com/net_undocumented/2006/08/powers_of_ten.html

I especially like the factor of 10 history and the original video is well simple remarkable.

http://www.youtube.com/watch?v=qrUQboKx_KE

For giggles the Simpson one is neat.

http://www.youtube.com/watch?v=yCfDRvDWid0