Remember the amazing human pixel performances at the Chinese Olympics? I was stunned at the beauty of thousands of people acting as one giant moving picture. Now, scientists at MIT are working on floating displays made up of individual controllable flying robots, each with adjustable colored lights.
I do hope these don't catch on as advertising, however. Can you imagine being accosted by a hovering, glowing face made up of artificial gnats nagging you to shop at Wal Mart or get your oil changed at Jiffy Lube? Greaaat.