Forget DDR. Forget playing the piano the regular way, or even backwards like some little girl on Ellen. THIS is what is cool to me.
I have seen these big floor piano things and always said "When I'm rich, I'm going to have one of those on the floor of my party room. [I'm going to have a club in my basement, duh.] Now I know that I need to step up my music skills and learn how to do play it like this, though.
Seriously, that's awesome. And if they tried even harder, they could totally turn it into an amazingly choreographed dance too. Ah, the possibilities.
BTW... Whoever made this XXXXL piano-- I heart you. It's just so cool.