Justin Timberlake and Jimmy Fallon cover over 20 tracks in the "History Of Rap, Part 4."

If you're a die-hard Justin Timberlake (or Jimmy Fallon) fan, you probably stuck by the TV ALL DAMN WEEK to watch Justin's "Late Night With Jimmy Fallon" residency, where he burned through new tracks from his upcoming The 20/20 Experience, like "Suit & Tie," "Mirrors," "Pusher Love Girl," and "Strawberry Bubblegum." But the week's BEST moment had to be when Justin and Jimmy added yet another leg to their "History Of Rap" series. (Or was it Questlove spilling the beans about a 20/20 sequel? We can't decide.)

Watch Justin Timberlake and Jimmy Fallon perform "History Of Rap, Part 4" on "Late Night With Jimmy Fallon" after the jump.

Covering more than 20 songs (check out the full list), Justin and Jimmy whipped through a totally irreverent set of hip-hop anthems, including, but not limited to Run-D.M.C.'s "It's Tricky," LL Cool J's "Going Back to Cali," Jay-Z's "Izzo (H.O.V.A.)," Missy Elliott's "Get Ur Freak On," and SOOO many more. Quite a way for Justin to ensure no one will ever beat his "Fallon" legacy, eh? Now all that's left to do wait for March 19 when The 20/20 Experience drops! Wait, that's tomorrow?? Time to re-watch every JT "Fallon" performance for the next 12 hours!

+ Watch Justin Timberlake and Jimmy Fallon perform "History Of Rap, Part 4" on "Late Night With Jimmy Fallon."

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