LittleBigChallenge - submissions so far
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The official LittleBigPlanet site's posted up some of the entries to the ongoing submit-a-Sackboy competition for the game, showing a Sackboy sheep, a Sackboy indian and a Sackboy pixel thing.
If you win you get your entry in the game itself, so hit the link and get designing. All the details about entry are through there.