They've done it again! Justin Timberlake and Jimmy Fallon educated Late Night viewers with a History of Rap medley for the fourth time on Friday.The medley featured everything from the Beastie Boys' "No Sleep Till Brooklyn," The Notorious B.I.G.'s "Hypnotize" and Salt N Pepa's "Shoop" to Macklmore and Ryan Lewis' "Thrift Shop" and Eminem's "Lose Yourself." Plus: Check out Timberlake's and Fallon's sweet dance moves!TV Scorecard: What's renewed? What's canceled?Watch the full History of Rap 4 below.
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