The below video shows an example circuit setup with two PIC18F microcontrollers communicating with each other using the Zigbee Protocol using two seperate Xbee antennas.

The idea is if you are in your kitchen, but your TV has the game on in your living room, and you would still like to see the game, then you could set this circuit up to rotate your TV with two push buttons on a wireless remote. Check out the video to see how that would work.