An awesome website for live tracking of satellites which uses the Google maps interface:
All Manner of Satellites
http://www.n2yo.com/
The International Space Station
http://www.n2yo.com/?s=25544
It is quite accurate, In Zebbug, Malta with a group of friends we were watching a bright object pass over. I assumed it was the ISS and was proved correct when I checked http://www.n2yo.com/?s=25544.
