OpenStreetMap is a wiki-style map of the world and this animation displays a white flash each time a way is entered or updated.
[vimeo]http://vimeo.com/2598878[/vimeo]
Fascinating clip on the timeline of entries/updates in the OpenStreetMap database in 2008.
More about this clip on:
http://vimeo.com/2598878
Or about the OpenStreetMap project at:
http://www.openstreetmap.org/