Season 4 · Episode 21 — Santa's Undocumented Helpers

Kevin Kline, Brie Larson and musical guest King Krule

Jonny Gomes & Shane Victorino, Artie Lang and musical guest Johnny Marr

Aziz Ansari, Deepak Chopra and comedian Adam Yenser

Chris Hemsworth, Marc Maron and musical guest Gavin DeGraw

Jon Cryer, Col. Chris Hadfield and musical guest Avril Lavigne

Dax Shepard, Regina Hall and comedian Sean Patton

Will Arnett, Jim Gaffigan and musical guest M.I.A.

Melissa McCarthy & Billy Gardell, Chris Elliott and musical guest Yuna

Eric Stonestreet, David Morrissey and comedian Reggie Watts

Paulina Rubio & Simon Cowell, Jimmy Pardo and musical guest Lissie

Ron Burgundy and musical guest Jessie Ware

James Franco, Neal McDonough and musical guest Nicki Bluhm & the Gramblers

Casey Affleck, Chris D'elia and comedian Jay Larson

Will Forte, Felicity Jones and musical guest Dawes

Ben Stiller, Evangeline Lilly and musical guest The Wild Feathers

Jim Parsons, Steve Coogan and comedian Daniel Sloss

Snoop Dogg, Mike Birbiglia and musical guest 7 Days of Funk featuring Snoopzilla & Dam-Funk

Jason Schwartzman, Columbus Short and musical guest Pentatonix

Benedict Cumberbatch, George Takei and musical guest John Legend

Adam Levine, Tim Conway and musical guest Lee Ranaldo & The Dust

Tom Hanks and musical guest The Head & The Heart

Jennifer Lawrence, Bob Odenkirk and musical guest Bad Religion

Christina Applegate, Skylar Astin and musical guest Young the Giant

Timothy Olyphant, David Koechner and musical guest Panic! at the Disco

Kat Dennings & Beth Behrs, Harland Williams and musical guest Kid Ink

David Mizejewski, Patton Oswalt and musical guest The Kin

Mark Wahlberg, Kathryn Hahn and comedian Chad Daniels

Courteney Cox, John Leguizamo and musical guest Jamestown Revival

Joel McHale, Lauren Ash

Damian Lewis, Jon Bernthal and musical guest Moon Taxi

Joseph Gordon-Levitt, Emmy Rossum and musical guest Sharon Jones & The Dap-Kings

The Cast of Workaholics and musical guest Gabrielle Union

Kristen Bell, Alana Nichols and musical guest Sarah Jarosz

Matt LeBlanc, The Cast of Impractical Jokers and musical guest Trombone Shorty & Orleans Avenue

Ice Cube, Wayne Gretzky and comedian Chris Fairbanks

Bill Hader, Breckin Meyer and musical guest The Strypes

Greg Kinnear, Anna Kendrick and musical guest Jimmy Vivino & the Black Italians

Don Cheadle, Josh Hopkins and musical guest Hard Working Americans

General Ray Odierno, Bill Burr

Zac Efron and Miles Teller, Ellie Kemper and musical guest Neko Case with Calexico

Ted Danson, Olga Kurylenko and musical guest J. Roddy Walston & The Business

Nick Offerman, Michelle Monaghan and comedian Daniel Sloss

The cast of The Walking Dead and musical guest White Denim

Martin Scorsese, Vanessa Bayer and musical guest Rock Candy Funk Party

Aubrey Plaza, Joel Kinnaman and musical guest Toni Braxton & Kenny "Babyface" Edmonds

Larry King, Cristin Milioti and musical guest Jhené Aiko

Tom Arnold, Dr. Jennifer Berman and comedian Ron Funches

Mel Brooks and musical guest Langhorn Slim

Ray Romano, Tom Felton and musical guest Fortune Feimster

Chris O'Donnell, Sage Kotsenburg and musical guest Needtobreathe

Jonah Hill, Lupita Nyong'o and musical guest John Butler Trio

Michelle Dockery, D.J. Qualls and musical guest Schoolboy Q

Sarah Michelle Gellar, Nick Kroll and comedian Ted Alexandro

John C. Reilly, Pete Holmes and musical guest The Haden Triplets

Malin Akerman, Jim Jefferies and musical guest James Durbin

Betty White, Jason Momoa and musical guest American Authors

Jeff Goldblum, Angie Harmon and comedian Isaac Witty

Kristin Chenoweth, Billy Connolly and musical guest Drive-By Truckers

Kevin Nealon, Ansel Elgort and musical guest Warpaint

Ricky Gervais, Gillian Jacobs and musical guest Goo Goo Dolls

Aaron Paul, Maggie Q and comedian Ian Karmel

Jeff Garlin, Andy Daly and comedian Todd Barry

Fred Armisen & Carrie Brownstein, Rachael Harris and musical guest Lucius

Rosario Dawson, Hannibal Buress and musical guest Frankie Ballard

Dallas - Adam Sandler and comedian Tig Notaro

Dallas - Seth Rogen and musical guest Phillip Phillips

Dallas - Simon Helberg and musical guest Eli Young Band

Dallas - Charles Barkley and musical guest Lyle Lovett

Howie Mandel, Christina Hendricks and comedian Rob Gleeson

Anthony Mackie, Kumail Nanjiani and musical guest Bad Suns

Andy Garcia, Jenna Elfman and musical guest Ingrid Michaelson

Mindy Kaling, Colin Hanks and musical guest MGMT

Nathan Fillion, Tatiana Maslany and comedian Dan Soder

Marlon Wayans, Nick Thune and musical guest Bastille

Tracy Morgan, Judy Greer and usical guest Broken Bells

Chelsea Handler, Hugh Dancy and comedian Cristela Alonzo

Kunal Nayyar, Max Brooks and comedian Hurray for the Riff Raff

Seth Green, Dave Attell and musical guest O.A.R.

Martin Short, Jessica Paré and musical guest Kelis

Julie Bowen, Billy Eichner and musical guest Ziggy Marley

Christopher Meloni, Dave Franco and musical guest Hamilton Leithauser

Sharon Osbourne, Paul F. Tompkins and comedian Emily Heller

Sharon Stone, Marc Maron and musical guest Rodrigo y Gabriela

Will Arnett, Melissa Rauch and comedian Ryan Hamilton

Lisa Kudrow, George R.R. Martin and musical guest Wild Cub

Eric Stonestreet, Rick Reilly and musical guest The Ghost of a Saber Tooth Tiger

Steven Ho, Molly Shannon and comedian Mike Recine

Norm Macdonald, Mackenzie Davis and musical guest Veruca Salt

Ellen Page, Bob Saget and musical guest Jennifer Nettles

Kellan Lutz, Kate McKinnon and comedian Gary Vider

Jane Fonda, Ramon Rodriguez and musical guest Twin Shadow

Emily Blunt, Brent Morin and musical guest Bob Mould

Jon Favreau, Rob Riggle and musical guest Echosmith

Channing Tatum and Jonah Hill and musical guest Grouplove

Cobie Smulders, Jenny Slate and comedian Ian Edwards

Jack White, Amber Stevens

Eric McCormack, Michael Lewis and comedian Roy Wood Jr.

Ice Cube, Chris D'Elia and comedian Hari Kondabolu

David Mizejewski, Max Greenfield and musical guest Bernhoft

Elijah Wood, Jason Mantzoukas and musical guest The Both

Kevin Hart, Rhona Mitra and musical guest Atmosphere

Ice-T, Whitney Cummings and musical guest Body Count

Meredith Vieira, Dean Norris and musical guest Cherub

Eric Bana, Andy Serkis and musical guest Conway

Joel McHale, Freddie Wong & Matt Arnold and comedian Daniel Sloss

Jason Biggs, Omar Gonzalez, Ellie Kemper

Michael Sheen, Joe Manganiello and musical guest Marsha Ambrosius

Michael Strahan, Famke Janssen and comedian Mark Normand

Jason Segel & Cameron Diaz, Matt Walsh and musical guest "Weird Al" Yankovic

Carl Reiner, Angela Kinsey and comedian Reggie Watts

Gary Oldman, Gabriel Iglesias and musical guest The Hold Steady

Stephen Moyer, Roger Corman and musical guest Boy & Bear

Dwayne Johnson, Taye Diggs and musical guest Tori Amos

The Cast of 'Orange Is The New Black' and musical guest Nikki Lane

Ethan Hawke, Mary Lynn Rajskub and musical guest Jamie Scott

Larry King, Lizzy Caplan and comedian Sam Morril

Megan Fox and comedian Todd Glass

Will Arnett, Anna Camp and musical guest Benjamin Booker

Damon Wayans Jr., Ali Larter and musical guest Lake Street Dive

Martin Lawrence, Kumail Nanjiani & Jonah Ray and musical guest Ty Segall

Aubrey Plaza, Kesha and comedian Cameron Esposito

Josh Groban, Nathan Fielder and musical guest Jenny Lewis

Jessica Alba, Marcus Haney and musical guest Tove Lo

Pierce Brosnan, Jaime King and comedian Hampton Yount

A full hour of CONAN outtakes from rehearsal and tapings gone wild...

Allison Janney, Brett Gelman and comedian Brooks Wheelan

Justin Theroux, Tony Hale and musical guest Shovels & Rope

Chris Hardwick, Keizo Shimamoto and musical guest David Gray

Mel Brooks, Adam Devine and musical guest Alt-J

Anna Faris, John Hodgman and musical guest Wiz Khalifa

Seth Green, Leslie Bibb and musical guest Sturgill Simpson

Kunal Nayyar, Ben Schwartz and musical guest Garfunkel & Oates

Timothy Olyphant, Nasim Pedrad and musical guest Passenger

Kevin Nealon, Dr. Jennifer Berman and comedian Nick Griffin

Marisa Tomei, Jim Jefferies and musical guest Old Crow Medicine Show

Hank Azaria, Hannibal Buress and musical guest Tegan & Sara

Zooey Deschanel, Breckin Meyer and musical guest Beck

Kirsten Dunst, Ike Barinholtz and musical guest Paul Simon

Luke Wilson and musical guest Dhani Harrison & Friends

Bill Hader, Chelsea Peretti and musical guest Norah Jones

Ben Kingsley, Al Madrigal and musical guest Kenny Chesney

Jesse Tyler Ferguson, Bill Burr and musical guest Chrissie Hynde

Nick Offerman, Jerrod Carmichael and comedian Pete Correale

Martin Short, Camilla Luddington and musical guest Ryan Adams

Dax Shepard, Rosemarie DeWitt and comedian Dan St. Germain

Jennifer Garner, T.J. Miller and musical guest Shakey Graves

Chelsea Handler, Nicholas Hoult and musical guest Gerard Way

Anthony Anderson, Jon Lovitz and musical guest The New Pornographers

Alan Cumming, Casey Wilson and musical guest Pentatonix

Dana Carvey, Cristin Milioti and comedian Gary Gulman

Kat Dennings, Wyatt Cenac and musical guest Tenacious D

Neil Patrick Harris, Damian Lillard and musical guest Kiesza

Blake Griffin, Max Greenfield and musical guest Bear Hands

Ashton Kutcher, Krysten Ritter and musical guest Beck

Jon Cryer, Katharine McPhee and a performance by Bob Odenkirk

Jake Gyllenhaal, Judy Greer and musical guest The War on Drugs