From its unexpected appearance to its social heyday to its reappearance in the American market, DDR has taken many forms -- not all of them sanctioned by Konami.

The game has spawned community, creativity, competition, lawsuits, 1,000+ songs that range from wacky to tacky to beautiful, and yes, a lot of dancing. While we were all leaning on the back bar, working up a sweat, DDR managed to change the world.