Need quick visual shorthand for an aggressively encroaching political entity? You want an Cartographic Land Octopus! It's a subcategory of satirical maps. More octopus maps here, here, here.
Milestones in graphics, maps, and visualizations. An incredible site for anyone interested in the history of visualization of data. See the first town map from 6200 BCE. Take a look at some of the most important graphics through history, including the London cholera map and the diagrams that made Florence Nightingale's case, as well as recent examples of some of the worst. Also check out the fascinating history of timelines, or Cabinet magazine's beautifully illustrated Timeline of Timelines.
Hans Rosling is on a mission (flash video). The founder of Gapminder (previously discussed here) gives an inspired talk about the third world, while turning statistics into beautiful graphics. Of course, the folks at Google are already all over this.