Solid square-mile grid in Oklahoma City.
In this first picture you can see part another night time lighting landmark in OKC, the enormous "antenna farm" on the northeast side of the city. It's really amazing to drive through all those red twinkling comm towers at night!
http://www.flickr.com/photos/nalilo/70585213/
The Petroleum Club... best place to view the grid at night (in fact, you can view the night grid while using the urinal in the bathroom, which is a great experience), but can't find many pictures of it for some reason
Another good one here
http://www.flickr.com/photos/kojo_46/3713621956/