Link: Game|Life

Game|Life is able to exclusively reveal that the Wii hardware will include a feature by which players can create "profiles" of themselves that include not only personal information but a caricature of their face that any Wii game will be able to access and use, as seen in the demonstration of Wii Sports Tennis.

Presumably, this profile storage capability would be attached to the Wii-remote, which would mean you could take your profile with you to a friend's house, and utilize your caricature within their games/system.

Funky.