Animal Crossing for the Wii may utilize the already created Miis as in-game avatars. Not only that but they may be able to keep any shirts or accessories while your Mii is in other Mii compatible games such as Wii Play, Wii Sports etc.
Read the whole article here: http://wiiregamers.com/articles/5201
If you liked the article could you please digg it. I'm trying to get my first frontpager. Hopefully this one at least makes it to the gaming frontpage.