America's Ridiculously Large $15T Economy
The Economist has a great interactive map that compares the economic output of American states to the economic output (GDP) of entire countries, which helps put the ridiculously large U.S. economy (GDP of about $15,000,000,000,000) into perspective. The map also compares the population of U.S. states to comparable countries. I featured a similar map on CD back in 2007, but it wasn't interactive.
HT: Robert Kuehl