Season 40 (2014-15)

9/27/14: Chris Pratt / Ariana Grande

10/4/14: Sarah Silverman / Maroon 5

10/11/14: Bill Hader / Hozier

10/25/14: Jim Carrey / Iggy Azalea

11/1/14: Chris Rock / Prince

11/15/14: Woody Harrelson / Kendrick Lamar

11/22/14: Cameron Diaz / Mark Ronson and Bruno Mars

12/6/14: James Franco / Nicki Minaj

12/13/14: Martin Freeman / Charli XCX

12/20/14: Amy Adams / One Direction

1/17/15: Kevin Hart / Sia

1/24/15: Blake Shelton

1/31/15: J.K. Simmons / D’Angelo

(SPECIAL) 2/15/15: 40th Anniversary

2/28/15: Dakota Johnson / Alabama Shakes

3/7/15: Chris Hemsworth / Zac Brown Band

3/28/15: Dwayne Johnson / George Ezra

4/4/15: Michael Keaton / Carly Rae Jepsen

4/11/15: Taraji P. Henson / Mumford & Sons

5/2/15: Scarlett Johansson / Wiz Khalifa

5/9/15: Reese Witherspoon / Florence + The Machine

5/16/15: Louis C.K. / Rihanna