Zurich air traffic on Google maps
Another very nice integration of Google Map:
All current flights are there with airline, flight number, altitude and aircraft type!!!! not in real time for obvious security reasons but very interesting nowadays.
http://radar.zhaw.ch/radar.html
Here are another variant, with Google Maps http://www.flygradar.nu/karta.php
and without: http://www.flygradar.nu/stockholm.php
