It is often said that an image is worth a thousand words. New York Times is a good resource for interesting visualization on current topics. The article on Europe’s Web of Debt is rather good at conveying a lot of information on the recent European Debt crisis. The width of the arrows and circles represents size of debt.
Earlier this year New York Times brought another interesting visualization: A Peek Into Netflix [rental] Queues, where you can explore where (by US postnumber) any top 100 movie gets rented. A standard US map is overlaid with a heatmap of the data, and combined with excerpts from the movie reviews. Very amusing.