ANOTHER WII FEATURE REVEALED?
CNN Money has posted an interview with Shigeru Miyamoto of Nintendo in which they discuss the Wii, Miyamoto's reaction to the name, and what could very well be another surprise feature of the console. While discussing Sony following Nintendo's lead with the motion sensor, they hint at another feature of the console, personalized gamer images.

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"The game was Wii Tennis - but instead of using generic character models, the onscreen faces in this match were caricatures of Miyamoto, Iwata and Fils-Aime (the contest winner did not have a personalized character). At the time, it seemed like a visual in-joke for conference attendees, but Miyamoto said the Wii might be able to create those personalized visages for players and their family members." - CNN Money
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When I first saw the caricatures of Miyamoto, Fils-Aime and Iwata in the press conference, I figured it was done specifically for the demonstration and wasn't indicative of a new feature. From what I saw, I would assume it will be more akin to creating a virtual avatar who resembles you as opposed to digitizing your actual likeness. Either way, it could be a very cool personalization feature for many of the Wii games.