Wii music in classroom

I found one interesting news about Wii music in the classroom: http://www.msnbc.msn.com/id/29127548/

The more I think about games, the more I feel it is how people perceive the activity. For example, classic classroom activities can view as a game which we have clear goal (answer all the questions in the test correctly), clear rules (you cannot cheat), and some kind of competition (before graduate school, there is more or less a curve concept in school that students need to do outperform the fellow students to get an A). Now, with Wii that people perceive as a game, students are receptive to learn with it.

However, some people still cannot accept that game can be a main instrument for learning instead of just a supplementary exercise.