The wii, with it's wireless controller that can also sense movement, has a number of games that require you to do a bit more than sit there and twiddle your thumbs (which, basically, let's admit, is what console gaming is...)
Here's the trailer.
And in case it no workey, the link:
YouTube - E3 2007 | Wii fit Trailer
Don't let the trailer fool you though... the music is MUCH worse than they make it out to be.
It's not really... A good hard workout. It's light activity that gets you moving, a few tough things, a good time, loads of frustration, and a handy way to get you off your ass while tracking your progress both there and elsewhere.