21. Motion Controllers
From the Wii to the PlayStation Move to Microsoft's aggressively-family-fun-peddling Kinect, the motion controller has become a staple of gaming, like it or not. It has opened the gaming market to countless people who would never have come into the fold otherwise. It has also made them look hilarious as they spaz out in front of their TV, breaking lamps and generally looking the fool. For that, motion controls, we thank you.