Wii

I had just about given up on finding a Wii when on a whim I stopped at a ShopKo (I never go there) and they actually had some. My kids spent the first evening making Mii's. I was amazed at sense of realism in driving a golf ball, hitting a baseball, and bowling. Nintendo did a great job. My 4-year-old found it totally intuitive. It is a fine piece of language agnostic user interface design.