4x1 - Alice Eve, Mark Duplass, Wyatt Cenac, Dorothy

September 4, 2018

4x3 - Blake Griffin, Paul Feig, Demetri Martin

September 6, 2018

4x4 - Cher, William H. Macy

September 7, 2018

4x5 - Rob Lowe, Leighton Meester, Poppy

September 10, 2018

4x6 - Joe Manganiello, Jennifer Love Hewitt, Why Don't We

September 11, 2018

4x7 - Allison Brie, Keegan-Michael Key, Prof. Robert Winston

September 12, 2018

4x8 - Mel B, Dr. Phil McGraw, Olivia Munn, Good Charlotte

September 13, 2018

4x9 - Tracey Ullman, Henry Golding, Madison Beer

September 18, 2018

4x10 - Kaley Cuoco, Joel McHale, Gaz Coombes

September 19, 2018

4x11 - Joan Collins, Johnny Galecki, Badflower

September 20, 2018

4x12 - Tiffany Haddish, Jay Hernandez, Tori Kelly

September 24, 2018

4x13 - Rupert Everett, Rob Riggle, Ben Howard

September 25, 2018

4x14 - Max Greenfield, Sophie Turner, Josh Groban

September 26, 2018

4x15 - Damon Wayans Jr., Gina Rodriguez, Mark Normand

September 27, 2018

4x16 - Chris Sullivan, Lil Rel Howery, Sabrina Carpenter

October 1, 2018

4x17 - Riz Ahmed, Mary Elizabeth Winstead, Phosphorescent

October 2, 2018

Actor Riz Ahmed (Venom (2018)); actress Mary Elizabeth Winstead (All About Nina (2018)); Phosphorescent perform.

4x18 - Jeff Bridges, Jenny Slate, Arctic Monkeys

October 3, 2018

4x19 - Beth Behrs, Taran Killam, Boy George

October 4, 2018

4x20 - Jon Hamm, Judy Greer

October 15, 2018

4x21 - Keira Knightley, Kathryn Hahn, Joe Zimmerman

October 16, 2018

4x22 - Jamie Lee Curtis, Felix Mallard, Colin Macleod

October 17, 2018

4x23 - Maya Rudolph, Nick Kroll, Rufus Wainwright

October 18, 2018

4x24 - Dakota Johnson, Gordon Ramsay, Mike Posner

October 22, 2018

4x25 - Jamie Dornan, Florence Welch, Florence + The Machine

October 23, 2018

4x26 - Rosamund Pike, Zlatan Ibrahimovic, Snow Patrol

October 24, 2018

4x27 - Amber Stevens West, Randall Park, Lenny Kravitz

October 25, 2018

4x28 - Carey Mulligan, Jenna Fischer

October 29, 2018

4x29 - Greg Kinnear, Katie Hill, Ariana Grande

October 30, 2018

Actor Greg Kinnear ("House of Cards"); congressional candidate Katie Hill; singer/songwriter Ariana Grande;

4x30 - Adam DeVine, Dan Stevens, KISS

October 31, 2018

4x31 - Rami Malek, Joel Edgerton, Mike Shinoda, Barbra Streisand

November 1, 2018

4x32 - Aaron Taylor-Johnson, Richard Madden, KISS, Snow Patrol

November 5, 2018

4x33 - Busy Philipps, Noah Centineo, Derren Brown, Morrissey

November 7, 2018

4x34 - Zoe Kazan, Jack Whitehall, Chloe x Halle

November 8, 2018

4x35 - Octavia Spencer, Jesse Williams, Pentatonix

November 12, 2018

4x36 - Justin Hartley, Dominic West, Elle King, Migos

November 13, 2018

4x37 - Melissa McCarthy, Richard E. Grant, Mark Wahlberg, Ian Karmel

November 14, 2018

4x38 - Maggie Gyllenhaal, Paul Dano, Diego Luna, Dylan Reynolds

November 15, 2018

4x39 - Kurt Russell, Viggo Mortensen, Marc E. Bassy ft. G-Eazy

November 19, 2018

4x40 - Eric Bana, Billie Lourd, Emily Heller

November 20, 2018

4x41 - Michael B. Jordan, Linda Cardellini, Eddie Redmayne, Death Cab for Cutie

November 21, 2018

4x42 - Michael Peña, Andy Serkis, Lauv & Julia Michaels

November 28, 2018

4x43 - Kermit the Frog, Minka Kelly, Peter Krause, Sampha

November 29, 2018

4x44 - Sara Gilbert, Jeff Goldblum

December 3, 2018

4x45 - Zachary Levi, Jake Johnson

December 4, 2018

4x46 - Jude Law, Steve Coogan, Sam Morril

December 5, 2018

4x47 - Jennifer Aniston, Dolly Parton, Leon Bridges

December 6, 2018

4x48 - Sean Hayes, Ice Cube

December 10, 2018

4x49 - Ellen DeGeneres, Patrick Wilson

December 11, 2018

4x50 - Gisele Bündchen, Janelle Monáe, Katherine Ryan

December 12, 2018

4x51 - Julia Roberts, Jason Momoa, Yahya Abdul-Mateen II, She & Him

December 13, 2018

4x52 - Armie Hammer, Amber Heard, Middle Kids, Cardi B

December 17, 2018