As a former, 'We don't need no stinkin' consoles!' PC gamer, I have to say, and I know people will cringe, is the Wii and the Kinect launch. The thing that got me out from the better graphics and occasional headaches of a PC was the innovations in movement.
I would visit family and friends and enjoy their consoles, but I was always happy with my PC. I remember the 'le Stick' joystick and thought the Wii would probably fail. But it actually solved the problem le Stick had - no reference point.
Now I have played a bunch of non-movementy stuff, that I wouldn't have played otherwise. And actually prefer of most games to be on a console. It was the innovation in movement that cause me to get out of my comfy chair and play.
PS (I left out the Move, because I have never used it.)