Making the Wii connection even easier: the first activities being measured right now are Wii games. "We're starting with a bunch of Wii games," said Byrne. "We find that some games have really good learning properties we can measure, and there are also some that people don't seem to get a lot better at." We're guessing the dual-wheel approach here is being used to gather even more detailed motion info (using more Wiimotes and thus more acceleromters) than just a single device.
The goal of this whole data-collection exercise is to create robotic systems to help teach physical tasks by providing direct feedback to the body -- basically pushing you in the way you need to move.