Justin Timberlake and Jimmy Fallon Perform Hip-Hop Medley on 'Late Night' (VIDEO)

While The Roots play backup, Justin Timberlake and Jimmy Fallon school the audience on the history of hip-hop by performing a medley of seminal hits from the genre on 'Late Night' (weeknights, 12:37AM ET on NBC).

Timberlake and Fallon start with 'Rapper's Delight' by The Sugarhill Gang, which is widely credited as the first song to popularize hip-hop, then segue into classics by RUN DMC, Beastie Boys and Snoop Dogg, before tackling more current hits by Eminem, Soulja Boy, Kanye West and Jay-Z.