Take a look at the Flash Movie that our own Dr J. put
together.  This shows where the data that has been 
received at the Dshield Database server in the last 5 
minutes originated from.

http://isc.sans.org/packetattack.php

(I particularly like the representation of the data 
received from the US - it appears that Johannes too 
understands that Iowa is indeed the Center of the US.)