The issue I take with those that would dismiss the potential of Wii Fit is that it seems the most common fall back argument I've read for why Wii Fit will fail is that it isn't "really" as good of exercise as just leaving your house and running around the block.
I think that's missing the point of why we have a 14 billion dollar fitness industry to begin with.
All of us have a basic understanding of general fitness and know common exercises that could be done everyday for free (push ups, sit ups, jogging) or with minimal equipment investment (bicycling).
What the majority of us lack though is a motivating factor that gets us from Point A to Point B. This is why such a cottage industry exists with exercise home videos.
Look at the myriad ab rockers and "crunch" assisting devices on the market. In many cases, probably the vast majority, these types of equipment and accompanying videos are nothing more than placebos, or at most motivational aids that get us to do things that we would not be driven to do ourselves without them.
I think arguing the merits of whether or not Wii Fit qualifies as a real, actual workout, is moot.
All that matters is whether or not people think it is giving them a workout. I believe it will succeed there -- same as Brain Training.
