FILE - In this May 5, 2013 file photo, Justin Timberlake performs at the MasterCard Priceless Premieres concert in New York. NBC announced Monday, Feb. 10, 2014, that Will Smith will appear on the Feb. 17 debut of “The Tonight Show Starring Jimmy Fallon.” U2 will perform. Justin Timberlake will close out the week, which will also include appearances from Michelle Obama, Will Ferrell, Bradley Cooper, Kristen Wiig and Jerry Seinfeld. Lady Gaga, Arcade Fire and Tim McGraw will also perform during the week. (Photo by Charles Sykes/Invision/AP, File)
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