www.politicalcompass.org
A great website with a wonderful questionaire that assesses your political views not simply on the economic (ie right or left) scale but on a social scale too. You can also see how historical figures, current politicians and other infulential individuals rated on the same scales.
Having been created by an obviously educated team, this site has had some very high rated criticism from people with good credentials. Ccheck it out if for no better reason than to see if your opiniosn are closer to the Dali Lama or Geoege Bush (among others).