Now... we know that video games improve hand-eye coordination (Yes, there are lots of studies, including one on a group of young medical students), but improve your health? On the heels of the Wii Fit (which was the brain child of Shigeru Miyamoto - Mario, Donkey Kong), come Ubisoft's "My Weight Loss Coach" for the DS which just shipped, and they are about to ship a program to help people quit smoking.
Of course hundreds of us aging gamers (Mea Culpa!) bought the Nintendo DS with "Brain Age" as our excuse - even my mother has one!