Nintendo announced a new product at E3 this year: Wii Music. This is clearly a way to demonstrate that they have no intention of making games anymore. Wii Music is a toy. Like a Jack-in-the-Box. Or a Superball.
There is no skill involved. You can't get better or worse. You can just press the buttons and watch things happen on the screen. A small-minded and stupid person might look at all video games like that, but I would recommend avoiding those kinds.