Whoever it was the created this demonstration for GE’s SmartGrid project had some creativity. This is one of the coolest demonstrations of recognition (Facial recognition applied to an object). You must watch the video below.
You can do this yourself. It is a very cool party type demo. All that is needed is a web cam. Turn up the speakers since there is audio. In fact, blow into your microphone to create artificial wind. You will see the windmills really start to spin.