Diaz and her pro surfer pal take their fun from the Hawaiian seas to the golf course. Plus: Katie, Ashley, Russell and more

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At Sundance to promote his movie Black Snake Moan, Justin Timberlake also puts his artistic talent on display during a visit to the Luxury Lounge in Park City, Utah, on Wednesday. The singer-actor's artwork will be auctioned off, along with those by other celebs including Jeremy Sisto and Rainn Wilson, on eBay starting Thursday to benefit the American Cancer Society for Skin Cancer.