Buzztracker keeps track of all the news under the Google World News area, and shows where different stories are being reported. The image above is updated in real time, and allows you to see how news travels. From their site:

Buzztracker is software that visualizes frequencies and relationships between locations in the Google world news directory. Buzztracker tries to show you how interconnected the world is: big events in one area ripple to other areas across the globe. Connections between cities thousands of miles apart become apparent at a glance.

I love technologies that build upon things that are already out there.