Actress Cameron Diaz poses for photographers during a media event before a premier of "Shrek the Third," in this June 7, 2007, file photo in Paris. Diaz has signed on for "Shrek Goes Fourth," slated for release in 2010, and reprises her voice role as Princess Fiona in "Shrek the Halls," debuting Wednesday, Nov. 28, 2007 on ABC. She hopes the small-screen special _ about Shrek's very first Christmas with his motley crew _ will become holiday tradition. (AP Photo/Jacques Brinon, file)

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