I was about to start a similar thread but then spotted this one. It isn't a documentary on the ISS directly but uses the 90 minute orbit of the ISS around the world to quote some interesting figures/statistics.
"Take an exhilarating ride aboard the international space station as it orbits the weird and wonderful planet that we call home. The program starts at zero degrees Greenwich in London, then moves around the globe looking at geology, weather, human activity and nature. This real-time snapshot of the wonder of existence will inspire, shock and surprise in 90 unforgettable minutes."
http://www.youtube.com/watch?v=4XHW29bVEJc