New References

http://www.youtube.com/watch?v=YsM4xfRKhUk

http://www.youtube.com/watch?v=OBk3ynRbtsw&feature=share

http://www.stumbleupon.com/su/19Wtsq/www.streetartutopia.com/?p=2014

http://www.youtube.com/watch?v=djV11Xbc914&ob=av2e

http://takalak.narod.ru/gorey/

http://vimeo.com/channels/staffpicks#1912188

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

http://en.wikipedia.org/wiki/Strange_loop