Justin Timberlake Will Help Welcome Jimmy Fallon to Tonight Show [VIDEO]
Justin Timberlake has been a regulary guest on the Late Show with Jimmy Fallon, and helped create memorable sketches like 'Hashtags' and the 'History of Rap.' They have even shared their memories of Summer Camp together. Justin is set to join Jimmy on Friday night Feb 21st. Don't forget to set you DVR.
History of Rap