Have you ever wondered what it would look like if you plotted all the places you have visited in the world? Where have you always wanted to visit?
Tripadvisor.com has a neat tool (under their "Fun & Free section, I believe) that allows you to plot locations across the globe and display them very quickly !
Here is an example for Dave Wheeler...
It is interesting to see that although Dave has traveled extensively within the US and parts of Canada & Europe, he has yet to go to Africa, Asia and the Middle East. Guess where his next vacation might be?