Wii Fit feet-on: feeling the burn, inadequate

So Nintendo showed up at our place today with a Wii Fit -- and an accompanying personal trainer to crack the whip and make sure our half hour of intro exercises and fitness games burned a sufficient amount of calories. Things we learned: our BMI is on the upper end of the "normal" bracket (shocking, considering how sedentary we are blogging 12 hours a day), our balance is kind of crappy, our "body age" is 39 -- over a decade more than our real age -- and no, not even Nintendo can make a fitness game that doesn't feel at least vaguely like PE. And now the 64k question: