File- This Jan. 13, 2013, file photo shows presenters Jimmy Fallon, left, and Jay Leno posing backstage at the 70th Annual Golden Globe Awards at the Beverly Hilton Hotel in Beverly Hills, Calif. Leno will close out his 22-year run as host of NBC's "The Tonight Show" with a nod to the future and to the past. His heir apparent, Fallon, will kick off Leno's final week with a guest appearance on Feb. 3. Fallon is taking over the gig after hosting NBC's "Late Night" since 2009. (Photo by Jordan Strauss/Invision/AP)