OSM 2008: A Year of Edits.
“An animation showing edits to the OpenStreetMap.org project during 2008. OpenStreetMap is a wiki-style map of the world and this animation displays a white flash each time a way is entered or updated. Some edits are a result of a physical local survey by a contributor with a GPS unit and taking notes, other edits are done remotely using aerial photography or out-of-copyright maps, and some are bulk imports of official data.”
Also via a bunch of folk on delicious, but this saves me copying across the embed code myself.