Friends with Benefits star/promoter Justin Timberlake appeared on Jimmy Fallon last night and they did another edition of “The History of Rap”. Last september they covered everyone from Eminem to Snoop Dogg, and you can watch that after the jump if you missed it. This time around, they cover Biz Markie, Salt n Pepa, Nelly, Lil Wayne, Outkast, and many more. Thankfully JT stops JF when he tries to bust out his Ricky Rozay impression. The awesome background music of The Roots is almost cancelled out by the annoying squeal of little girls.