Wii Fit is mine for sure. It looks absolutely fantastic - they are going to sell a gazillion of these. I'd also lay money on seeing them equipped in many, many hospitals as a rehabilitation/physiotherapy device. Skiing/snowboarding and skateboarding games = awesome.Seriously here. People yawning about Wii Fit are idiots. I did too at first, then I tried the thing. It's incredibly accurate; I was sweating after playing Hula Hoops. I did the skiing game and my muscle movements and weight shifts in my feet controlled the turning.
From that BMI graph it looks like they've taken some cues of the functionality like the Nike+ ipod. Did they have the ability to set goals and compete online against other people - i.e. X number of pushups per month etc? I should probably read some more about it.....