Ralph Macchio, Wendy Williams, Petra Nemcova cut a rug
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Ralph Macchio and Karina Smirnoff on 'Dancing With the Stars'
Ralph Macchio's 'Karate kid' skills have transferred beautifully onto the dance floor. He and partner Karina Smirnoff scored a 21, which didn't match last week's performance, but is a good sign for the duo.