Check out this light installation by Project Blinkenlights from 2002 in Paris. It’s a pretty amazing full-building display with a 20×26 pixel wall on which to show video and play games. You may have heard of this one before, or similar projects, but Arcade allowed everyone to play games, such as Tetris, on the building with only a cell phone. They also utilized spotlights in every window hooked up to a dimmer, allowing for a full spectrum of gray tones.
Not too shabby for 2002! I’d love to see more of these in the US, especially around conventions and shows. If you have any other examples of full-building light displays feel free to post them in the comments. Thanks @ashaman212 for the link!