Ellen Degeneres

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Musician Loudon Wainwright III, poses for photographers on the red carpet before entertainer Ellen DeGeneres receives the 15th annual Mark Twain Prize for American Humor at the Kennedy Center, Monday, Oct. 22, 2012, in Washington. (AP Photo/Alex Brandon)

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Actress Lily Tomlin poses for photographers on the red carpet before entertainer Ellen DeGeneres receives the 15th annual Mark Twain Prize for American Humor at the Kennedy Center, Monday, Oct. 22, 2012, in Washington. (AP Photo/Alex Brandon)

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Entertainer Steve Harvey, left, with his wife Marjorie Bridges pose for photographers on the red carpet before entertainer Ellen DeGeneres receives the 15th annual Mark Twain Prize for American Humor at the Kennedy Center, Monday, Oct. 22, 2012, in Washington. (AP Photo/Alex Brandon)

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Actor John Krasinski poses for photographers on the red carpet before entertainer Ellen DeGeneres receives the 15th annual Mark Twain Prize for American Humor at the Kennedy Center, Monday, Oct. 22, 2012, in Washington. (AP Photo/Alex Brandon)

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Entertainer Ellen DeGeneres, second from front left, waves as she is introduced, with wife Portia de Rossi, left, before DeGeneres receives the 15th annual Mark Twain Prize for American Humor at the Kennedy Center, Monday, Oct. 22, 2012, in Washington. (AP Photo/Alex Brandon)

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Entertainer Ellen DeGeneres, left, with her wife Portia de Rossi, pose for photographers on the red carpet before DeGeneres receives the 15th annual Mark Twain Prize for American Humor at the Kennedy Center, Monday, Oct. 22, 2012, in Washington. (AP Photo/Alex Brandon)

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Entertainer Ellen DeGeneres, center, greets fans on the red carpet before receiving the 15th annual Mark Twain Prize for American Humor at the Kennedy Center, Monday, Oct. 22, 2012, in Washington. (AP Photo/Alex Brandon)

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Entertainer Ellen DeGeneres, second from front left, reacts as she is introduced, with wife Portia de Rossi, left, before DeGeneres receives the 15th annual Mark Twain Prize for American Humor at the Kennedy Center, Monday, Oct. 22, 2012, in Washington. (AP Photo/Alex Brandon)

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Ellen DeGeneres, here taping her daytime program, "The Ellen DeGeneres Show," in Burbank, Calif., in 2011, will receive the Kennedy Center's Mark Twain Prize for American Humor. (AP Photo/Warner Bros., Michael Rozman, File)

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Ellen DeGeneres will receive the Mark Twain Prize for American Humor at the Kennedy Center on Oct. 22. The ceremony will be televised on PBS stations Oct. 30. (Associated Press)

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Ellen DeGeneres will receive the 15h annual Mark Twain Prize for American Humor on Oct. 22 during a show at the Kennedy Center. She quipped, "why didn't I get this sooner?" Bill Cosby, Tina Fey and Will Ferrell are previous honorees. (Warner Bros. via Associated Press)

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First lady Michelle Obama was a guest in February on Ellen DeGeneres' talk show. Miss DeGeneres is "not just a comedian," said Cappy McGarr, a Kennedy Center board member. "She's really a miracle worker. She got the president to dance, the first lady to do pushups and [Republican] Tom DeLay to laugh." (Warner Bros. via Associated Press)

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Ellen DeGeneres (Warner Bros. via AP)

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Paris Jackson, seen in March with brothers Prince Michael (left) and Blanket, will talk about her movie, "Lundon's Bridge," on Ellen DeGeneres' show on Wednesday. (FOX via Associated Press)

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FILE - In this Jan. 5, 2011 file photo, television personality Ellen DeGeneres, right, and actress Portia de Rossi arrive at the COVERGIRL Cosmetics' 50th Anniversary Party in Los Angeles. (AP Photo/Dan Steinberg, file)

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President Barack Obama, with his family first lady Michelle Obama, left, and their children Sasha Obama, obscured, and Malia Obama, third from left, are joined by from third right, Matthew Morrison, Mariah Carey, and host Ellen DeGeneres, during the Annual Christmas in Washington presentation, at the National Building Museum in Washington, Sunday, Dec. 12, 2010. (AP Photo/Manuel Balce Ceneta)