Streaming to AirPlay
Apple TV is an insidiously useful device, acting as a wireless bridge between Macs and iOS devices for screen mirroring and streaming of movies, music, podcasts, and photos. It too is an Apple-only technology.
But that $5 AirSync add-on utility for DoubleTwist lets you stream music and videos from an Android device to the Apple TV -- just as if it were an iPhone or iPad. When it works, that is -- I often could not get the AirTwist streaming icon to appear, and I never did figure out why.