Hi from GDC! I haven't been at the conference in over 4 years, but I guess it feels as crazy and crowded as usual. So far, my best experience has been to try Nintendo's Wii Fit (which now has a US release date of May 19th according to the guy at the booth). I tried the skiing game and the soccer one. My first reaction: the board is incredibly sensitive, so it gets a while to get used to it. But once you do it, it works pretty well. I'm pretty sure the experience is close to using the wiimote the first time: it takes a few minutes to get used to it. I also was able to lift the mat itself and I'm happy to report that it's not heavy at all (I would say the same or less weight than your average scale). As you can see in the pic, players where required to take their shoes off, in the best Japanese tradition. Does it look like a killer app? It certainly does but, you never know. Nintendo has been on a roll lately and certainly can achieve another mass success with the Wii Fit, but of course we will need to wait and see what 3rd party developer come up with. Meanwhile, I'll definitively grab one as soon as they become available.