30/5/08 - "Wild Sanctuary is home to the largest private archive of natural sound, anywhere! Our worldwide collection represents over 3,500 hours of wild soundscapes and nearly 15,000 species." Great for Geography, Science and as writing stimulus.
24/8/07 - Great fun - pilot a cartoon biplane around one of serveral capital cities around the world, the Moon or Mars. Could be used for geography at a push.