Jimmy Fallon challenges Justin Timberlake on his hip-hop knowledge and soon after, with help from The Roots, Justin and Jimmy take the viewers thru the history of hip-hop. MUST WATCH: Justin Timberlake & Jimmy Fallon's Amazing 'History Of Rap' Marketplace Help us defeat a proposed tax that could kill local radio as we know it! Take Action Now! Stay ...

Let's make sure this happens again one day. Photo: NOEL CELIS/AFP/Getty Images Earlier today, EW posted a portentous exchange they had with The Social Network star Justin Timberlake regarding the future of his once-fiery, now-dormant music career.

If you've ever thought anything along the lines of "You know what would be a good thing? A If Justin Timberlake were to cover several of the most popular hip-hop songs ever," then you are in luck.

Andrew Garfield and Justin Timberlake attend the after party for the premiere of 'The Social Network' during the 48th New York Film Festival at The Harvard Club on September 24, 2010 in New York City Justin Timberlake attends the premiere of "The Social Network" during the 48th New York Film Festival at Alice Tully Hall, Lincoln Center, NYC, ...