S21E01 - Lena Dunham; Max Greenfield; Brandy Clark

S21E02 - Joel McHale; Marv Albert; Washed Out

S21E03 - Scarlett Johansson; John Grant

S21E04 - Anderson Cooper; Bobby Moynihan; Will Hoge

S21E05 - Mindy Kaling; Jeff Altman; Red Fang

S21E06 - Bill Cosby; Sleigh Bells

S21E07 - Michael Strahan; Jennifer Nettles

S21E08 - Kevin Hart; Mo Rocca; The Orwells

S21E09 - Brian Williams; Rosanne Cash

S21E10 - Don Cheadle; Myq Kaplan; Roadkill Ghost Choir

S21E11 - Andy Samberg; Michael B. Jordan; Ellie Goulding

S21E12 - Martin Scorsese; Allison Williams; Cults

S21E13 - Rachel Maddow; Spike Jonze; No Age

S21E14 - Kevin Bacon; Pat McGann; Devon Avenue

S21E15 - Louis C.K.; B.J. Ganem; Artic Monkeys

S21E16 - Eric Stonestreet; Nick Goepper; Bastille

S21E17 - Drew Brees; B.J. Novak; Against Me!

S21E18 - Dr. Phil McGraw; Danny Koker; Dum Dum Girls

S21E19 - Bill Murray; Eagulls

S21E20 - Will Arnett; Broken Bells

S21E21 - George Clooney; Sting

S21E22 - Matt Damon; Lenny Kravitz

S21E23 - Patrick Stewart; The Flaming Lips

S21E24 - Regis Philbin; Ms. Lauryn Hill

S21E25 - Kevin Spacey, Amber Heard, a Top Ten List presented by the cast of

S21E26 - Sage Kotsenburg, Kate Mara

S21E27 - Kaitlyn Farrington, Lupita Nyong'o, Little Dragon

S21E28 - Keri Russell, Terry Fator

S21E29 - Pauley Perrette, Jeff Caldwell, Lake Street Dive

S21E30 - Kaley Cuoco-Sweeting, Dale Earnhardt, Jr., The Fray

S21E31 - Olympic Gold Medalist Ted Ligety, Kat Dennings, Lo-Fang

S21E32 - Meredith Vieira, Band of Horses

S21E33 - Stupid Human Tricks, Simon Helberg, Young the Giant

S21E34 - Jack (Jungle) Hanna, Jake Johannsen

S21E35 - Zach Braff, Sgt. Brendan Marrocco & Dr. Andrew Lee, Future Islands

S21E36 - Michael Keaton, Phantogram

S21E37 - Tom Selleck, Carrie Brownstein, David Nail

S21E38 - Tom Brokaw, Andrew Hadlock, Bob Mould

S21E39 - Mary-Louise Parker, Lenny Marcus, Joan Jett & the Blackhearts

S21E40 - Sen. John McCain, Little Mix

S21E41 - Jason Bateman, Miles Teller, Gary Allan

S21E42 - Sylvester Stallone, Theo James, Ledisi

S21E43 - Bryan Cranston, Melissa Rauch, Le1f

S21E44 - Bill O'Reilly, Nick Griffin, the Dough Rollers

S21E45 - Jimmy Carter

S21E46 - Emma Watson, Nick Offerman, a musical tribute to Johnny Cash

S21E47 - Peter Dinklage, Hari Kondabolu, Sage the Gemini

S21E48 - Cobie Smulders, Nick Cannon, Manchester Orchestra

S21E49 - Kristin Chenoweth, Amy Schumer, Johnnyswim

S21E50 - Bill Murray, Martha Stewart, Lady Gaga

S21E51 - Johnny Depp, Kevin Drew

S21E52 - Billy Crystal, Tony Hale, Liv Warfield

S21E53 - Rob Lowe, Brooklyn Decker, London Grammar

S21E54 - Lindsay Lohan, Jamie Edwards, Real Estate

S21E55 - Courteney Cox, Jimmie 'J.J.' Walker, Christina Perri

S21E56 - Stephen Colbert, Robin Roberts, Kelis

S21E57 - Sally Field, Timothy Simons, Needtobreathe

S21E58 - Neil Patrick Harris, Sarah Hyland, Ray LaMontagne

S21E59 - Piedmont Bird Callers, Michael J. Fox, Naughty Boy

S21E60 - Joel McHale, Vera Farmiga, Aloe Blacc

S21E61 - Lucy Liu, Ziggy Marley

S21E62 - Kiefer Sutherland, Adam Resnick, Benjamin Booker

S21E63 - Louis C.K., a performance from the Broadway cast of Rocky

S21E64 - Don Rickles, Carmen Lynch, the Ghost of a Saber Tooth Tiger

S21E65 - Shailene Woodley, Peyton Manning

S21E66 - Jon Cryer, Elizabeth Olsen, Foster the People

S21E67 - Mariah Carey, Rick Harrison

S21E68 - James Franco, Idina Menzel, a performance by the Broadway cast of 'If/Then'

S21E69 - Nathan Fillion, Tom Dreesen, Hunter Hayes

S21E70 - Harry Connick Jr., Jesse Eisenberg, the Black Keys

S21E71 - Jim Parsons, Julie Chen, Hozier

S21E72 - Barbara Walters, Elle Fanning, Randy Houser

S21E73 - Adam Sandler, Thomas Haden Church

S21E74 - Lea Michele, Andy Kindler, Chromeo

S21E75 - Jack Hanna, Stephen Malkmus & the Jicks

S21E76 - Kid scientists, Sarah Silverman, We Are Scientists

S21E77 - Sgt. Kyle J. White, Judy Greer, Dierks Bentley

S21E78 - Donald Trump, Indianapolis 500 winner Ryan Hunter-Reay, Elizabeth Cook

S21E79 - Martin Short, John Oliver, Spanish Gold

S21E80 - Anderson Cooper, Victor Espinoza, the Afghan Whigs

S21E81 - Hugh Jackman, Joe List, Elvis Costello

S21E82 - Kelsey Grammer, Willie Nelson

S21E83 - Dave Chappelle, Laura Prepon, a Top Ten List presented by Miss USA, the Orwells

S21E84 - Christopher Walken, Janelle Monae, Tatiana Maslany, Miss USA 2014

S21E85 - Regis Philbin, Paul Morrissey, First Aid Kit

S21E86 - Susan Sarandon, Whitney Cummings, Angel Olsen, David Sanborn

S21E87 - Olivia Wilde, Shep Gordon, Empires

S21E88 - Dana Carvey, Ellie Kemper, Sam Smith

S21E89 - Paul Rudd, Jeff Altman, John Doe

S21E90 - Adam Levine, Gen. Frank J. Grass, Broken Bells

S21E91 - Melissa McCarthy, Rachelle Lefevre, Phish

S21E92 - Mark Wahlberg, Ben Falcone, Hurray for the Riff Raff

S21E93 - Mark Ruffalo, Former Marine Lance Cpl. William 'Kyle' Carpenter

S21E94 - Halle Berry, Steve Young, War on Drugs

S21E95 - Joan Rivers, Capital Cities

S21E96 - Lizzy Caplan, Sleeper Agent

S21E97 - Michael Douglas, Paul Morrissey, Kiesza

S21E98 - Kurt Russell, Hannibal Buress, Sturgill Simpson

S21E99 - Jason Segel, Liv Tyler, Trampled By Turtles

S21E100 - Emma Stone, Nathan Fielder, American Authors

S21E101 - Colin Firth, Tommy Johnagin, EMA

S21E102 - Jeff Daniels, Norah O'Donnell, A Special Performance of 'MacArthur Park'

S21E103 - Ricky Gervais, Taylor Schilling, Eli Young Band

S21E104 - Eric Stonestreet, Brody Dalle

S21E105 - Staff Sgt. Ryan Pitts, Sharon Van Etten

S21E106 - John C. Reilly, Rachelle Lefevre, Conor Oberst

S21E107 - Chris Pratt, Rodrigo y Gabriela

S21E108 - Zoe Saldana, Crash

S21E109 - Julia Louis-Dreyfus, Simon Amstell, David Gray

S21E110 - Bruce Willis, the Gaslight Anthem

S21E111 - Joseph Gordon-Levitt, Novak Djokovic, Robby Johnson

S21E112 - Kathy Griffin, Ken Burns, Jeremy Messersmith

S21E113 - Serena Williams, Chadwick Boseman, Echo & the Bunnymen

S21E114 - Michael Cera, dock diving dogs, Lyle Lovett

S21E115 - Howie Mandel, EMA

S21E116 - James McAvoy, Chris Russo, The Last Internationale

S21E117 - Mike Myers, Bonnie McFarlane, John Fullbright

S21E118 - Luke Wilson, Julie Chen, Lee Brice