Another day, another Justin Timberlake performance. The day prior, he performed "Mirrors" on Late Night with Jimmy Fallon. Here, Timberlake performs "Let the Groove Get In" on the same show with The Roots and a bunch of other people.
There's speculation that Fallon is being groomed for The Tonight Show gig. With all the time J.T. is spending on the Fallon set, perhaps he'll take that slot? Late Night with Justin Timberlake has a nice ring to it. Just saying.