Facebook Timeline, the new profile design launching soon on Facebook, makes broad use of the Bing Maps API. Similarly, the Facebook Places feature also incorporated Bing, but now both maps use a different, more simplified style.
Have you ever noticed how little sense the placement of zip codes make? Sequential zones are an entire city apart. Sometimes there are even zip codes wholly contained within other zip codes. It takes a visual zip code map to make sense of it. Huge.info has just such a map using an interactive Google Map and custom overlay images.