Flightgear can be so much fun specially on projectors. Here are some FGFS screenshots running on our desktop (A circa 2001 P4 Dell PC with a relatively newer NVIDIA 6600GT running Debian Etch)













































Happy Landing!

Btw if you dont mind shelling out ~$50, then there is also the really nice X-Plane (for linux). It is specially good for instrument flying, has realistic worldwide airports and scenery (based on SRTM data) and I highly recommend it.