The Tonight Show Starring Jimmy Fallon Season 2 Christina Aguilera, Jeff Probst, Kid Rock Season 2, episode 31 Christina Aguilera, Jeff Probst, Kid Rock February 23, 2015 45 min Singer Christina Aguilera; TV host Jeff Probst; Kid Rock performs. Previous episode Kevin Bacon, Amy Sedaris, Nick Jonas Next episode Josh Duhamel, Gabrielle Union, Charlie Wilson