Jimmy Fallon finished out his first week at the Tonight Show desk by taking the stage to perform a hip-hop history duet with Justin Timberlake, like they’ve done so many times before at Late Night. This fifth time, the best-buddy duo commemorated everyone from LL Cool J to Run DMC, with nods to the Beastie Boys, Salt N’ Pepa, and, Jay Z along the way. See the full song list here.
