Akamai Real Time Internet Monitor

Akami saysto deliver more than 15% of web applications traffic. Out of their network traffic they produce statistics and nice visuals.

Real Time Web Monitor
http://www.akamai.com/html/technology/dataviz1.html

Visualizing Akami - 30 million Visitors per Minute
http://www.akamai.com/html/technology/dataviz3.html

Net Usage Index for Retail (Online Retail Peaks per Region)
http://www.akamai.com/html/technology/nui/retail/charts.html

via
http://www.readwriteweb.com/archives/akamai_visualizations.php