Thomas Leroy (Vincent Cassel) urges ballerina Nina (Natalie Portman) to lose herself in her role in Darren Aronofsky's psychological thriller Black Swan. Niko Tavernise via Fox Searchlight hide caption

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Natalie Portman plays Nina, a ballerina dancing the roles of both the White Swan and the Black Swan, in Darren Aronofsky's psychological horror film Black Swan. Niko Tavernise via Fox Searchlight hide caption

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Anne Hathaway at the premiere of Love and Other Drugs. She co-stars in the romantic drama alongside Jake Gyllenhaal. Chris Pizzello/AP hide caption

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Leslie Nielsen played Lt. Frank Drebin in the television comedy Police Squad! which later led to starring roles in the Naked Gun franchise. The Kobal Collection hide caption

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It's important to talk to your vet about any changes in your dog's behavior or diet, says veterinarian Nicholas Dodman. iStockphoto.com hide caption

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Carlos Eire is a professor of history and religious studies at Yale. Free Press hide caption

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Astrid Kircherr (left) and her manager, Ulf Kruger, pose at a Beatlemania exhibition opening in Hamburg, Germany in 2009. Krafft Angerer/Getty Images hide caption

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Judy Garland (center) starred in the 1944 movie musical Meet Me in St. Louis. She sings "Have Yourself a Merry Little Christmas" to her sister, played by Margaret O'Brien, who was upset that her father wants to move the family to New York City. The Kobal Collection hide caption

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In The King's Speech, Colin Firth plays King George VI, who was adored by his subjects for refusing to leave London during World War II bombing raids. He also suffered from a terrible stammer and hated speaking in public. Laurie Sparham via The Weinstein Co. hide caption

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A woman prepares to undergo radiation therapy for an invasive cancer. Dr. Siddhartha Mukherjee writes about the discovery of radiation therapy as a treatment option in his biography of cancer. National Cancer Institute hide caption

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Frank Loesser won the Academy Award for his song "Baby It's Cold Outside." Stroud/Express/Getty Images hide caption

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Jay-Z tells Terry Gross one of his earliest rhymes, which he wrote when he was just 9: 'I'm the king of hip-hop / Renewed like the Reebok / The key in the lock / Words so provocative/ As long as I live." The hip-hop artist says that when he looks back on that rhyme now, he thinks, "Wow, that was pretty prophetic." Jay Mohegan via Random House hide caption

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Bruce Springsteen and Ed Norton talk on stage at the Toronto International Film Festival in September. George Pimentel/WireImage for TIFF hide caption

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Paul Reubens, dressed in character as Pee-wee Herman, poses on stage after a performance of The Pee-wee Herman Show, on Broadway. Charles Sykes/AP Photo hide caption

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