Inspired by Andy’s version here’s a map of all the countries I’ve visited (their server is straining under the load, so be patient).
create your own visited country map
I’m cheating slightly – I went to Hong Kong just after reunification, so that bags me a lot of red in China (har har), and I was in Switzerland for about 15 minutes changing trains, but apart from that it’s legit. Have a go and let me know the results.