Ooo, an R/C plane with a cockpit mounted micro video camera/transmitter that’s slaved to a gyro on the pilots head. Lots of discussion here. Video here, here, and here (best by far, lots of close passes with the ground).

Pretty much the idea is that the camera is sending a cockpit point of view back to the pilot where he views it on a set of head mounted goggles. To add a bit of extra zing to the equation the camera pans and tilts in response to the wearers head movements. You can see the fun that could be had with this, eh? Telepresence is amazing!

Some specs and build notes from the discussion group: (prices in Canadian I think)

My equipment is old. New equipment:
Gyro:$425
headset:$699
cam: $99
video tx/rx: around $150
antenna: 8dbi patch (optional) around $60
amateur radio license is req’d because you need to exceed 10mw of power.(it’s not hard to get and inexpensive in Canada)
and also it’s easy to plug, but not easy to get good video link without video dropout. It’s not easy to explain everything for me to someone who don’t have good electronic skill, for now it’s not for everyone.
The cam in this setup is glue on a servo and allow 45 deg of panning, the servo is plug in the rudder channel if not use or on slider etc. The servo can be modified to 180 deg easily by adding two resistor on pot. lead or buying a special circuit.

Remote Head-Mount Gyroscope-Controlled Camera Plane