Sorry to ressurect this thread again. Having just got wminput working on my n900, it has occorred to me that a wiimote and nunchuck would be a great controller combo when flying one of these. Mostly because i have plenty of spare wiimotes, and no dual shock 2 controller, as was mentioned earlier.

You could even have the altitude alerts trigger the vibration in the wiimote. (and the same for impacts, if the frone can detect them.)