cartograms

http://images.google.com/imgres?imgurl=http://issrweb.asu.edu/images/gis/cartogram.gif&imgrefurl=http://issrweb.asu.edu/services/gis/sample-maps.html&h=416&w=660&sz=107&hl=en&start=26&sig2=fB2frQdQYVrzjawf4s0Tsg&um=1&tbnid=vh6gsgy3HDAPKM:&tbnh=87&tbnw=138&ei=6GOXSJOlDJSypgTT4PXmBg&prev=/images%3Fq%3Dcartograms%26start%3D18%26ndsp%3D18%26um%3D1%26hl%3Den%26rls%3Dcom.microsoft:en-us:IE-SearchBox%26rlz%3D1I7SUNA%26sa%3DN

I think cartograms are really cool. They show a distorted view to show the information on the map. The one I found shows the population per county in the United States. The bigger areas shown are the denser metro areas (Florida, New York, and California).