Here is an amusing game: Pong, played on traffic light controls.

STREETPONG from HAWK Hildesheim on Vimeo.

Via Boing Boing:

Streetpong is the name of the game: a concept art installation that radically improves the experience of waiting to cross the road. Created by Sandro Engel and Amelie Künzler, with Holger Michel at the HAWK Hildesheim, it is, alas, “not a permanent installation.”