For those who liked the other geography quiz I linked to a while back, here's one that is similar to tetris. Drop the states in their proper place using the arrow buttons on your keyboard. There are maps of Europe and Africa into which you drop the countries, and maps of the US, the UK, France and The Netherlands into which you drop states (or counties or whatever those European countries subdivide into). My times for filling in the US map was 4:06.7 on the easy setting which earned me a "Very Good" and 7:43.5, also on easy for Europe, for which I was told, "I've seen people do worse." That didn't give me enough confidence to try the even more difficult maps.
Anyway, give it a shot and post your scores in the comments. Here's the link again: Statetris.