Although it may have actually happened a few years ago, a few people have recently mentioned the Project Blinkenlights installations
where entire buildings are turned into classic arcade game screens which players can control vis SMS. Tetris, Pong, Breakout & PacMan have all been played on the really, really big screens, with each office becoming a pixel on the mutli-story screens. I'd imagine this would look pretty amazing! I'd love to see something like this in Perth, but since Western Power seems to be having difficulty keeping normal power running, I guess lighting up big enough buildings at night might not be the most considerate use of power!