Economist: Charting the Wind
... The animated infographic displays wind flowing over America, measured between one and 30 miles per hour. It uses data from the National Digital Forecast Database, which is updated hourly. One can appreciate the northerly midwestern gales, and dramatically see Hurricane Isaac threatening New Orleans.
The Viégas and Wattenberg team have distinguished themselves by combining fascinating data with brilliant design to tell stories that cannot be so easily told in any other way. Among Mr Wattenberg's celebrated visualisations is one of his earliest, a "map of the market" (at the side), which colorfully tracked the daily rise and fall of share prices by degree, direction, sector and firm, scaled by market capitalisation—all in a single glance. ...
You have to go to the link above to see the interactive map. I blew me away! ;-)