Ever wondered where that plane you can see is going?

I've been using www.flightaware.com for a long time. It does a similar thing with for US flights only, all flights (unless blocked), including all the small flights, are shown if they are under radar control. Flightaware shows many more flights than this site, but their map is nowhere near as good. I'd like to see a similar interface with the non-airline flights.

This is great, just chose a plane that was incoming to Liverpool airport and tracked it, could see it out of the window at the same time :D

I can use this to check what planes are on the approach to Heathrow (I live under the final 30 seconds, take occasional snaps) very cool :D