Take one radio-controlled airplane or helicopter, add a Wi-Fi router and some custom software, then mix in an iPhone's accelerometer and touch interface. What do you get? An R/C aircraft controller.
Joshua Ziering loves to fly radio-controlled 'copters and planes, and he describes exactly how he went about developing an app and the associated hardware to control their flight by tilting his iPhone and moving throttle controls on the screen in a post on his blog. Check it all out in the video below.
Gary Z. at MacMost.com -- thanks for the tip!