Today

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** FILE ** In this Nov. 2, 2012, file photo, Steven Tyler of Aerosmith performs on NBC's "Today" show in New York. (Photo by Charles Sykes/Invision/AP, File)

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**FILE** Zac Brown of the Zac Brown Band performs July 13, 2012, on NBC's "Today" show in New York. (Charles Sykes/Invision/Associated Press)

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**FILE** Zac Brown of the Zac Brown Band performs July 13, 2012, on NBC's "Today" show in New York. (Charles Sykes/Invision/Associated Press)

This image released by NBC shows host Matt Lauer, left, posing with Adam Greenberg after an appearance on the "Today" show, Thursday, Sept. 27, 2012 in New York. The Marlins said Thursday that they have signed Greenberg to a one-day contract, effective Oct. 2, and will play him that day against the New York Mets. Greenberg made his big-league debut for the Chicago Cubs on July 9, 2005 against the Marlins, getting one plate appearance but no official at-bat after a 92 mph fastball that struck him in the head. Greenberg was the subject of a campaign called "One At Bat," which lobbied teams to give him a second chance. The Marlins publicly extended the invitation to Greenberg on NBC's "Today" show Thursday morning. (AP Photo/NBC NewsWire, Peter Kramer)

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Bonnie Franklin, star of the sitcom "One Day at a Time," appears with the reunited cast on NBC's "Today" show in New York in 2008. (AP Photo/Richard Drew)

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NBC's "Today" host Savannah Guthrie (left) interviews TV personality Kris Jenner of "Keeping Up with the Kardashians" on the show in New York on Sept. 11, 2012. (Associated Press/NBC)

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**FILE** Nicki Minaj performs Aug. 14, 2012, on NBC's "Today" show in New York. (Associated Press/Starpix, Amanda Schwab)

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Lionel Richie, left, sings with Al Roker and Savannah Guthrie while performing on NBC's "Today" show on Thursday, Aug. 16, 2012, in New York. (Photo by Charles Sykes/Invision/AP)

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** FILE ** In this Aug. 10, 2011, photo provided by NBC, "Today" show co-host Savannah Guthrie appears on the set during a broadcast, in New York. Guthrie was welcomed Monday, July 9, 2012, by her co-host, Matt Lauer, after replacing Ann Curry as co-host on the popular morning news program. A majority of morning viewers has greeted the arrival of Savannah Guthrie with a yawn in her first week as “Today” show co-anchor. Nielsen says NBC's “Today” was beaten last week by ABC archrival “Good Morning America” by 357,000 viewers. (AP Photo/NBC, Peter Kramer, File)