The last time Justin Timberlake was on "Late Night with Jimmy Fallon," the actor and musician teamed up with the host and his in-house band, The Roots, to run through a medley representing a broad ...

Justin Timberlake hasn't hosted "Saturday Night Live" near as many times as Steve Martin or Alec Baldwin. But news that he's back at the helm for the fifth time in a decade is enough to elicit the ...