Dude, I'm a personal trainer. I shout at people every day to get them motivated to move around. I think that the WiiFit is an excellent tool to get people moving. (And I think that the yoga programs are genuinely excellent pose practices.) I mean, let's be real - there's no way that it would be of actual assistance to an athlete or someone who is already capable of beating the strength programs on hard, but for your average gamer?

WiiFit is going to be the thing getting them up off the couch, and as such is wonderful. I've already watched three of my friends have more success with using WiiFit every other day than they had just going to the gym and flubbing around on the treadmill for twenty minutes.