NBC's "Late Night with Jimmy Fallon" With Guests Keira Knightley, Dave Matthews, Michael Buble

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Dave Matthews, Keira Knightley, host Jimmy Fallon, and Michael Buble... News Photo2010,2012,Arts Culture and Entertainment,Celebrities,Choice,Color Image,Dave Matthews,Horizontal,Indoors,Jimmy Fallon,Keira Knightley,Late Night Television,Late Night with Jimmy Fallon,Laughing,Michael Buble,New York City,Night,People,Portrait,Season 4,Sketch Comedy,Smiling,Talkshow,Television Show,USAPhotographer Collection: NBCUniversal 2012 NBCUniversal Media, LLCLATE NIGHT WITH JIMMY FALLON -- Episode 742 -- Pictured: (l-r) Dave Matthews, Keira Knightley, host Jimmy Fallon, and Michael Buble during a skit on December 3rd, 2012 -- (Photo by: Lloyd Bishop/NBC/NBCU Photo Bank via Getty Images)