The Tonight Show Starring Jimmy Fallon Season 2 Denis Leary, Molly Shannon, Kacey Musgraves Season 2, episode 91 Denis Leary, Molly Shannon, Kacey Musgraves June 9, 2015 45 min Actor Denis Leary; actress Molly Shannon; Kacey Musgraves performs. Previous episode Larry David, Jason Alexander, Natasha Leggero, Alabama Shakes Next episode Whoopi Goldberg, Christian Slater, Of Monsters and Men