O god...I hate that game. Unfortunately one of my friends is also an addict. And he's actually pretty darn good at it.
The funny thing is he gets so serious when playing it, it's kinda funny to watch. And he'd used to always talk about how a bunch of overweight people lost like 200lbs playing the game.
Oh yeah, if you surf on DDRFreak's forums, I think he's usually in South channel, under the name Big Pat Punisher--his alter ego.