Flickr is where I usually end up when I have some computer time and bloglines hasn't got anything new for me. Today I was there when I came across this great new toy.
create your own visited countries map
Does exactly what it says on the tin.
Although I have to say, it is a bit of a blunt instrument. I scored the whole of Russia with one brief Moscow stopover on the way to Japan. Other places, like Tonga, I actually lived for a few years, but the dot on the map is so tiny that if your monitor is dusty you'll miss it.
Anyhow, I'm linking to it mainly for the benefit of my Dad, who's the reason I've lived in so many different places. He's going to love playing with this one!