Here's a web site to test your geography IQ - http://www.travelpod.com:80/traveler-iq.
I took this test once, and it took several minutes to get through the 11 levels. It kicked me off after 11 levels because I didn't get enough points on the 11th level.
I got 563,693 points, and have a Geography IQ of 132.
This is hard once you get to the "Hard" level. There are many places that I had to guess at on the Hardest level.
I could rarely get the cursor right on the exact place, although you aren't penalizedm uch for coming pretty close.