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From left, "Today" show co-hosts, Al Roker, Ann Curry and Matt Lauer talk with Sarah Palin during the show in New York on Tuesday, April 3, 2012. Palin was the much-hyped guest co-host on NBC's "Today," going head-to-head against former "Today" anchor Katie Couric, who this week is subbing on "Good Morning America" at her current workplace, ABC. (AP Photo/NBC, Peter Kramer)

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NBC's singing competition "The Voice" features (from left) Blake Shelton, Christina Aguilera, Cee Lo Green and Adam Levine as coaches. The show will now allow viewers to cast votes via Facebook's timeline app. (NBC via Associated Press)

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In this photo provided by NBC, Republican presidential candidate, former Massachusetts Gov. Mitt Romney talks with Jay Leno during his appearance on "The Tonight Show" in Burbank, Calif., Tuesday, March 27, 2012. (AP Photo/NBC, Paul Drinkwater)

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In this undated image released by NBC, judges, seated from left, Blake Shelton, Christina Aguilera, Cee Lo Green and Adam Levine are shown during a rehearsal for the second season of "The Voice," in Los Angeles. A new Facebook application will allow fans of NBC's "The Voice" to vote for their favorite artists through their Facebook profiles, now known as their timelines. (AP Photo/NBC, Lewis Jacobs)

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Republican presidential candidate Mitt Romney talks with Jay Leno during his appearance on NBC's "The Tonight Show" in Burbank, Calif., on Tuesday, March 27, 2012. (AP Photo/NBC, Paul Drinkwater)

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NBC "I'm happy to just be a petrified tree stump where I get a laugh because a bird lands on me and picks an insect out of my hair," actor Nick Offerman says of his "Parks and Recreation" character Ron Swanson, a masculine role model plagued by no breach of confidence.

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**FILE** David Axelrod, political adviser to President Obama, appears Jan. 29, 2012, on NBC's "Meet the Press" in Washington. (Associated Press/NBC News)

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In this photo provided by NBC News, David Axelrod, Obama Campaign Senior Political Strategist, appears on NBC's "Meet the Press" in Washington, Sunday, Jan. 29, 2012. (AP Photo/NBC News, William B. Plowman)

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Taking part in a Republican presidential debate in Tampa, Fla., on Monday, Jan. 23, 2012, are (from left) former Pennsylvania Sen. Rick Santorum, former Massachusetts Gov. Mitt Romney, former House Speaker Newt Gingrich and Texas Rep. Ron Paul, as moderator Brian Williams of NBC News listens. (AP Photo/Paul Sancya)

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NBC News anchor Brian Williams moderates the 19th Republican presidential debate in Tampa, which could yield a creative outburst from GOP hopeful Mitt Romney this time. (Image from NBC)

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Six Republican presidential candidates — (from left) former Utah Gov. Jon Huntsman, former Pennsylvania Sen. Rick Santorum, former Massachusetts Gov. Mitt Romney, Texas Rep. Ron Paul, former House Speaker Newt Gingrich and Texas Gov. Rick Perry — listen to a question from David Gregory, moderator of NBC's "Meet the Press," during a GOP presidential candidate debate at the Capitol Center for the Arts in Concord, N.H., on Sunday, Jan. 8, 2012. (AP Photo/Charles Krupa)

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Dunder Mifflin is not just the name of the fictional paper company where Steve Carrell works in NBC's "The Office." It's a new copy-paper brand as well, produced by the Staples-owned Quill.com and packaged with slogans from the show. (NBC Universal via Associated Press)

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Judah Friedlander, who plays Frank Rossitano on NBC's '30 Rock,' delivers his deadpan standup routine Friday and Saturday at the DC Improv.

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In this image released by NBC, Republican presidential candidate Michele Bachmann, of Minnesota, left, points to a photo of host Jimmy Fallon, dressed as Bachmann, during a visit to "Late Night with Jimmy Fallon," that aired early Tuesday, Nov. 22, 2011, in New York. (AP Photo/NBC, Lloyd Bishop)

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Jay Leno will play host to President Obama on NBC's "Tonight Show" Tuesday night. (Associated Press)

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Rep. Ron Paul, Texas Republican, said on NBC's "Meet the Press" Sunday that he wants to end federal student loans, calling it a failed program that has put students in debt when there are no jobs and when the quality of education has deteriorated. As president, he said he would eliminate five federal agencies. (NBC via Associated Press)