The Wii can be a workout, that's certain.
It pales in comparison to the amount of walking, biking and hauling I do in a regular day, though, so I don't expect to notice much weight change. Maybe if I bought and used Wii Fit...
"The worst part about these reviews is they are [subjective]--and their scores often depend on how drunk you got the media at a Street Fighter event." — Mona Hamilton, Capcom Senior VP of Marketing
*Image indefinitely borrowed from BrainBoxLtd without his consent.