After a week-long appearance as the musical guest, Justin Timberlake went out with a bang on Friday night's (March15) episode of "Late Night with Jimmy Fallon."

Sticking to tradition, the "Sexy Back" singer and the host of the evening show took to the stage to perform their fourth installment of "History of Rap."

Jay Leno already retired from “The Tonight Show” once, only to return a short time later, but it seems he may be ready to hang it up when his contract is up in 2014.

And if all goes according to plan, it stands to reason that Jimmy Fallon would be a suitable successor, as he’s knocked it out of the park as the host of “Late Night” at 12:35.

Slipping on her dancing shoes, First Lady Michelle Obama joined Jimmy Fallon to show some unique support for her "Let's Move" campaign.

During a visit to "Late Night" on Friday (February 22), the comedic host and FLOTUS hit the studio floor to demonstrate some of the most iconic dance moves.