We've been taking a look back at the year's biggest headlines, cutest couples, and most exciting pictures with our Best of 2010 coverage, and now we want your help crowning the celebrity you think had the most amazing smile. From hot Hollywood actors to sexy singers, we love it when stars show us their sparkly teeth, but only one can come out on top. Check out the official rules, then get started playing our new best of faceoff game, and enter for a chance to win $500 — we're sure it'll put a smile on your face!
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