Fallon, Timberlake Present 'History Of Rap' Vol 5.

Jimmy Fallon closed out the first week of his new gig hosting The Tonight Show with a new installment of one of his most beloved Late Night franchises: the History of Rap.

With Justin Timberlake at his side, Fallon launched Volume 5 with LL Cool J's "I'm Bad," and breezed through hits by the Beastie Boys, Tone Loc, DJ Jazzy Jeff and the Fresh Prince, Salt-N-Pepa, Notorious B.I.G., Outkast, Kris Kross, Drake and Kendrick Lamar, among others, before closing with a dash out into the audience for Run DMC's "Walk This Way."