Last night, Justin Timberlake and Jimmy Fallon debuted a sequel to their "History of Rap".

The duo's original "History of Rap" -- a timeline of hip-hop -- went viral after its September debut on NBC's "Late Night With Jimmy Fallon".

Timberlake and Fallon launched into a medley of rap hits that included Rob Base and DJ EZ Rock's "It Takes Two," Salt-N-Pepa's "Push It," Vanilla Ice's "Ice Ice Baby," Outkast's "Hey Ya!," Cypress Hill's "Insane in the Brain" and Nelly's "Hot in Herre."

The whole thing ended with the audience joining in on the chorus of Biz Markie's "Just a Friend."

The first "History of Rap" included Sugar Hill Gang's "Rapper's Delight," the Beastie Boys' "Paul Revere," A Tribe Called Quest's "Award Tour," Eminem's "My Name Is" and Kanye West's "Golddigger."