The Tonight Show Starring Jimmy Fallon: Season 3 Episode 48, December 3, 2015. Watch all seasons of The Tonight Show Starring Jimmy Fallon, free online. Watch even more episodes of The Tonight Show Starring Jimmy Fallon free in HD. The Tonight Show Starring Jimmy Fallon stars Jimmy Fallon and The Roots. Guests on this episode of The Tonight Show Starring Jimmy Fallon include Mindy Kaling and Gwen Stefani.