Haven't autogyros been tried as personal flying devices before? And when will people realize that we don't need more personal transportation, but less?

Yeah, the Smallville episode was hilareous. Best line:

Clark sez "I don't know, is it just me, or is there something fishy about that guy?"

Completely deadpan.

There's in building in my home town that displays colored (static) light displays at Xmas. The rooms aren't actually lit. It's just a colored light next to the individual window. So, you could do this one any building. You just need a light next to the window that has good response time. This may also explain while the "right left" problem above. There may be several lights on each window for this display.