Geek and 3d murals/graffiti lists

http://weburbanist.com/2008/06/29/top-10-3d-graffiti-artists-in-the-world/

http://weburbanist.com/2008/02/17/7-more-unusually-geeky-approaches-to-graffiti-from-remote-control-robots-to-digital-pixel-writing/