The latest version of Google Earth has a crude flight simulator as an Easter egg. Simply hit Command-Option-A in the Mac version and a flight simulator dialog will pop up. After you’ve “discovered” the Easter egg, it will appear in the Tools menu for future flights.
I tried flying it and was wildly unsuccessful. Didn’t try it with a joystick or with my yoke or pedals. I still prefer the freeware flights that Flightgear provides. Still, its kind of cool flying around with picture-perfect scenery, even if you wind up crashing into that scenery a bit too often.
(h/t, Marco via Boing Boing)