The first, sorta official release of FGLive is here. FGLive – FlightGear Live is a bootable live system on CD (or any bootable medium) that boots into Linux, with FlightGear setup, ready to run. FlightGear is an open-source, multi-platform, cooperative flight simulator development project.
To find out more about FGLive, see here, and make sure you read the README as well.
See screenshots and videos of FlightGear here.