One of the fun things on the Nintendo Wii is being able to create your “Mii.” (pronounced “me”) There are also sites that show you how to make Mii’s that look like famous people. After it is created, you use that Mii to play the different games on Wii Sports. You can also move the Mii with you to other Wii’s by loading it to your Wii Remote.
Mii Transfer allows you to transfer the Mii from your Remote to your Mac. You can then share it online with others or even edit it further with the online Mii editor.
The Wii is so Mac-like anyway. This tool just bridges the two.