Over one millennia of Europe's changing borders wrapped up into a three minute time-lapse video.
[video: http://www.youtube.com/watch?v=uoWtvpg77oE width: 612px]
Update: Unfortunately this video has been removed from YouTube due to a copyright dispute.
How do you represent 1,000 years of European history? The video above is a good effort at visualising the continent's shifting boundaries over the past millennium.
The video above tends to miss out on some of the detail, so here's another, slower version, which has a timeline at the top left of the display, allowing you to track the changes through the decades:
[video: http://www.youtube.com/watch?v=kBK9yncmps8 width: 612px]