width=450Robin Williams, star of the film World's Greatest Dad, greets Mabel, a Boston Terrier featured in the film, at the film's premiere in Los Angeles, California August 13, 2009.

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Brad Pitt arrives at the premiere of The Time Traveler's Wife in New York August 12, 2009.

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Rachel McAdams arrives at the premiere of The Time Traveler's Wife in New York August 12, 2009.

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Keanu Reeves (L) leaves from a restaurant at Zapallar town, some 181 km (121 miles) of Santiago, August 16, 2009.

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Eric Bana and his wife Rebecca Gleeson arrive at the premiere of The Time Traveler's Wife in New York August 12, 2009.

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Madonna performs during her Sticky and Sweet Tour concert in Munich August 18, 2009.

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Hilary Duff waves during a ceremony to name her as youth ambassador at the Lievano palace in Bogota August 14, 2009.

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Gael Garcia Bernal arrives for a screening of the film Inglourious Basterds in New York August 18, 2009.