If you have 15 minutes to spare, give this a try. Basically, you have to enter as many countries as possible in 15 minutes. Spelling counts, which cost me a few points, unfortunately.
Here's the link: How Many Countries Can You Name?
I got 116 out of 195. There were a few really obvious ones that I should have gotten, but I did manage to get a number of the more obscure ones. Not really a great score, but it's probably not all that shabby either. Below is a mini-image of my final map (click to zoom) so that there's no spoilers. Green = correct and Red = missed. Enjoy!