The video you see above is from a yet-to-be released game called Dance Central. The game is made by Harmonix, the fine folks behind the Rock Band series of games. It utilizes the Kinect motion sensor for the Xbox 360. It is essentially what Rock Band did for musical instruments, except the concept this time around is dancing. I think I’d have to extremely intoxicated to play this game in front of people. I think I’d wind up looking like this guy (who is actually playing the game).
A good workout, which those people need.
Meanwhile, an older concept:
http://www.youtube.com/watch?v=4PgfzhIMmUM
Keep in mind that the target audience/dancers are supposed to be females.