If you have yet to play a dance themed game, I suggest you get on the bandwagon. Like the famous Guitar Hero franchise before it, Just Dance is a game where everyone can play and mostly everyone will enjoy. It makes fools out of everyone and will have many people doubling over in pain from the laughter that ensues with hours with the fantastic game.
Well, that advice notwithstanding, I think I'll sit this--and every other dancing game--out. Forever. But you might like it if dancing is your idea of fun.