yeah my friend and I here at university play enough ddr to make up for everyone
in fact, we even built our own hard pad, and it works great
it's one hell of a workout too, and i'm definitely seeing some huge results in the midsection/legs(they're HUGE!)
and skier...ddr extreme is coming out for the ps2 this fall, should make your cardio that much more interesting
and for those of you who have no idea what I am talking about, check out
www.ddrfreak.com