Here are some websites for flight tracking:
- FlightStats.com – Flight status, delays and airport information
- FlightAware.com – Live flight tracking
- StarAlliance Screensaver – Real or accelerated time plotting of 17 major international plus more regional carriers
- SpottersRadar.com – Real-time virtual aviation radar
- KuwaitStorm.com – Kuwait’s weather and aviation site
UPDATE: [2013-03-27] FlightRadar24.com is the ultimate mash-up of ADS-B and Google Maps.