This is a video of an intersection in Germany that allows two pedestrians on opposite sides of the street to play a little game of pong against each other while waiting for the walk light to turn green. The game even has a timer that shows you how long you've got left until its safe to cross.
Might be the greatest idea ever. There is always that awkward time at the light when you don't know if you should smile at the person next to you or just watch the traffic. Now you can play interactive games! I wonder if you can play if there is not anyone across the street....