This is a fairly inexpensive head tracking system that uses an Arduino, an R/C gyro, and a 3-axis accelerometer for control. The maker claims you can build a complete 3-axis system for about $50. This, along with some video goggles, would be a great addition to any R/C plane or helicopter.
Turned out it is quite simple to interface with Microsoft Flight Simulator X to control the camera for testing. The final goal is to control the camera on my RC glider. My head tracker uses a sensing element from a cheap RC rate gyro, a cheap 3 axis accelerometer, and an ATMEGA168 micro-controller running arduino.
In the Maker Shed: