Julie Bowen, Travis Rice and comedian Maria Bamford

Joel McHale, Cheryl Hines and comedian Jesse Popp

Kirsten Dunst, Chris Hardwick and musical guest Mariachi El Bronx

LL Cool J, Grayson MacLean and comedian Christian Finnegan

Jeff Goldblum, Adam Scott and musical guest Childish Gambino

Nicole Polizzi, Rob Riggle and musical guest Pegi Young and the Survivors

Kristen Stewart, Jimmy Pardo and comedian Pete Holmes

Jason Segel, Shaun-T and musical guest Das Racist

Nathan Fillion, Angela Kinsey and musical guest Morrissey

Claire Danes, Nick Kroll and comedian Michael Kosta

Zooey Deschanel, Harland Williams and comedian Laurie Kilmartin

Alec Baldwin, Damon Wayans Jr. and musical guest Yelawolf

Sofia Vergara, Paul F. Tompkins and comedian Tig Notaro

Michael Moore, Ellie Kemper and comedian Sean Patton

Jeremy Piven, Mike Mizanin and musical guest Blink 182

Rob Lowe, Donald Faison and musical guest Noel Gallagher

Bob Costas, Nick Frost and comedian Nick Vatterott

Christoph Waltz, Mike Zohn & Evan Michelson and musical guest Deer Tick

Dax Shepard, Kunal Nayyar and musical guest Dawes

Seth MacFarlane, Elle Fanning and musical guest The Klezmatics

Patton Oswalt, Kevin Lee and comedian Joe Mande

Charles Barkley, Marc Maron and musical guest John Pizzarelli

Thomas Haden Church, Claire Smith and musical guest Glen Campbell

Gary Oldman, Judy Greer and musical guest Everlast

Emmy Rossum, Dave Attell and musical guest Chris Isaak

Johnny Galecki, Mindy Kaling and comedian Tom Papa

Seth Green, David Cross and musical guest Gavin DeGraw

Chelsea Handler, Billy Eichner and musical comedy by Doyle & Debbie

Jack McBrayer, Justin Verlander and comedian Dwayne Perkins

Ricky Gervais, Wladimir Klitschko and musical guest James Durbin

Kate Beckinsale, Stephen Merchant and musical guest St. Vincent

Antonio Banderas, Fred Armisen and musical guest Blake Mills

Shaun White, Jordan Peele and musical guest Sammy Adams

Billy Gardell, Gina Carano and comedian Owen Smith

Casey Anderson, Morena Baccarin and musical guest Wilco

Sam Worthington, Julie Nunes and world champion whipcracker Adam Winrich

Elizabeth Banks, Timothy Olyphant and comedian John Mulaney

Cuba Gooding Jr, Jon Heder and musical guest They Might be Giants

Maya Rudolph, Chris Gethard and musical guest Dale Earnhardt Jr. Jr.

Simon Helberg, Chris Kyle

Ringo Starr, Mark Moffett

John Krasinski, Jenny Slate and musical guest Evanescence

Kristen Bell, Bret McKenzie and comedian John Roy

Dr Phil McGraw, Keegan-Michael Key and musical guest Alabama Shakes

Martin Short, Jon Bernthal and musical guest Dr Dog

Carol Burnett, Jon Glaser and musical guest Graffiti6

Ice T & Coco, Adam Parry and musical guest Wale featuring Miguel

Reese Witherspoon, RZA and a special performance of the live action graphic novel 'The Intergalactic Nemesis'

Tom Arnold, Curt Schilling and comedian Myq Kaplan

Steve Martin, Rebecca Romijn and musical guest Cake

Amanda Seyfried, Andy Lewis & the US Pro Team and musical guest Fun.

Jennifer Aniston, Ron and Amy Shirley and comedian Jay Larson

Kevin Nealon, Mike Epps and musical guest Dhani Harrison

Artie Lange & Nick DiPaolo, Beth Behrs and musical guest Chiddy Bang

Betty White, Ken Marino and musical guest Young Jeezy featuring Ne-Yo

Khloe Kardashian Odom, Jeb Corliss and comedian Matt Knudsen

Megan Mullally, Steven Ho and musical guest Mona

Zac Efron, Kirby Bliss Blanton and musical guest Joe Louis Walker

Don Cheadle, Elisha Cuthbert and musical guest Wzrd

Ed Helms, Melissa Rauch and comedian Kumail Nanjiani

Jon Hamm, Rob Riggle and comedian Mike Lawrence

Ewan McGregor, David Mizejewski and comedian Dana Gould

Shaquille O'Neal, Steve Schirripa and musical guest Sharon Van Etten Special miniConan episode that takes place on a shrunk down version of the Conan set.

Will Ferrell, Dr. Sanjay Gupta and musical guest Jasmine Van Den Bogaerde

Kristin Chenoweth, Liam Hemsworth and comedian Moshe Kasher

Josh Hutcherson, Simon Pegg and musical guest Macy Gray

Dana Carvey, Mayim Bialik and musical guest Donovan

Christian Slater, Eliza Coupe and musical guest Galactic

Neil Patrick Harris, Kate Micucci and musical guest Yuna

Mike Tyson, Chris Elliott and comedian Cy Amundson

Seann William Scott, Maria Menounos and musical guest Heartless Bastards

Aziz Ansari, Christina Hendricks and musical guest Good Old War

Cory Monteith, Matt Kemp and comedian Tim Minchin

Jason Biggs, Phil and Willie Robertson and musical guest M. Ward

Larry David, Lena Dunham and musical guest Craig Morgan

Nicole Richie, Jim Gaffigan and musical guest Arctic Monkeys

Kevin Hart, Brittany Snow and musical guest First Aid Kit

Patton Oswalt, Gabrielle Union and comedian Bo Burnham

Sean Hayes, Paul F. Tompkins and musical guest Girls

Kunal Nayyar, Krysten Ritter and musical guest Emeli Sande

Kathy Griffin, Morgan Spurlock and comedian Erin Foley

Simon Helberg, Jerry Crowley and musical guest Haley Reinhart

Julia Louis-Dreyfus, Brian Posehn and musical guest Ben Kweller

Jack Black, Simon Doonan and musical guest Ingrid Michaelson

Metta World Peace, Matt Walsh and musical guest The Lumineers

Piers Morgan, Ben Falcone and musical guest Ed Sheeran

Joel McHale, Nina Dobrev and comedian Reggie Watts

Tom Selleck, Zosia Mamet and musical guest The Wombats

Bill Maher, Gregg Allman and comedian Hannibal Burress

Liam Neeson, Marc Maron and comedian Brody Stevens

Wanda Sykes, Brooklyn Decker and musical guest Rufus Wainwright

Tracy Morgan, Bar Refaeli and comedian Trevor Boris

Howie Mandel, Alice Eve and comedian John Ramsey

Josh Brolin, Alison Brie and musical guest White Rabbits

David Mizejewski, Aaron Paul and musical guest Neon Trees

Charlize Theron, Curtis Stone and musical guest Bahamas

Jennifer Love Hewitt, Breckin Meyer and musical guest JD McPherson

Chris Hemsworth, Malin Akerman and comedian Jonah Ray

Chicago - Jack McBrayer and musical guest Grace Potter & the Nocturnals

Chicago - Andy Samberg and musical guest Eric Hutchinson

Chicago - Johnny Galecki and musical guest Kids These Days

Chicago - Adam Sandler, T.J. Miller and Triumph the Insult Comic Dog

Martin Short, Aubrey Plaza and musical guest The Spring Standards

Sharon Osbourne, Ashley Fiolek and comedian Chad Daniels

Mitt Romney's Sons, Rob Corddry and musical guest Shinedown

Seth Meyers, Jordana Brewster and musical guest The Avett Brothers

Mila Kunis, Joel Stein and comedian Rory Scovel

Russell Brand and musical guest Big K.R.I.T

Chris Pine, Anthony Mackie and musical guest El-P

Mark Wahlberg, Billy Eichner and musical guest Infantree

Denis Leary, Steve Byrne and comedian Cristela Alonzo

Elijah Wood, Claire Smith and musical guest Kip Moore

Bryan Cranston, Globe of Steel and musical guest Walk the Moon

Freida Pinto, Chris Hardwick and comedian Sebastian Maniscalco

Kevin Nealon, Ashley Benson and comedian Beth Stelling

Eric McCormack, Eric Andre and musical guest The Xx

Kate Beckinsale, Doug Fine and musical guest Tennis

Ben Stiller, Olivia Munn and musical guest Flo Rida

Colin Farrell, Angie Harmon and musical guest thenewno2

Jeff Daniels, Chantal Sutherland and musical guest The Fray

Jon Cryer, Moon Bloodgood and musical guest Jason Mraz

Will Ferrell and musical guest Tenacious D

Eric Stonestreet, Dominic Monaghan and musical guest Norah Jones

Lisa Kudrow, Vince Gilligan and musical guest Grouplove

Steve Carell, Ronda Rousey and musical guest Ziggy Marley

Matt LeBlanc, Travis Pastrana and comedian Andy Haynes

Dax Shepard, Wendy Williams and musical guest Silversun Pickup

Isla Fisher, Dean Norris and musical guest Andrew W.K.

Kristen Bell, Rebel Wilson and musical guest Owl City & Carly Rae Jepsen

Kyra Sedgwick, Mike Birbiglia and comedian Dominic Dierkes

David Mizejewski, Kunal Nayyar and comedian Todd Barry

Lauren Graham, Rob Delaney and musical guest Best Coast

Seth Green, Mary Lynne Rajskub and musical guest Milo Greene

Kelsey Grammer, NeNe Leakes and musical guest The Head and the Heart

Eva Longoria, James Marsden and comedian Roy Wood Jr.

Bob Costas, Lake Bell and musical guest The Hives

Steven Ho, James Van Der Beek and musical guest The Walkmen

Simon Cowell & Demi Levato and musical guest Nancy & Beth

Chris Colfer, Adam Scott and comedian Nikki Glaser

Simon Helberg, Anna Kendrick and musical guest Delta Rae

Ricky Gervais, Tig Notaro and musical guest Frank Turner

Elizabeth Banks, Jordan Peele and musical guest Animal Collective

Nathan Fillion, Bill Burr and musical guest Band of Horses

Joseph Gordon-Levitt, Emily Deschanel and comedian Jamie Lee

Jake Gyllenhaal, Karen Gillian and musical guest The Chevin

Rashida Jones, Adam DeVine and musical guest The Shins

Timothy Olyphant, Ashley Greene and comedian Hari Kondabolu

Jennifer Garner, Terry Crews and musical guest Tegan & Sara

Jenny McCarthy, J.J. Abrams and musical guest Slash featuring Myles Kennedy & The Conspirators

Patton Oswalt, Cheryl Hines and musical guest Michael Kiwanuka

Kevin Nealon, Steven Yeun and musical guest Ty Segall

Anthony Anderson, Alex Wagner and musical guest Ellie Goulding

Jeff Goldblum, Maggie Q and comedian Sean O'Connor

Aziz Ansari, Chuck Lorre and musical guest Kendrick Lamar

Will Arnett, Erin Burnett and musical guest Harry Shearer

Rainn Wilson, Elisha Cuthbert and musical guest Two Door Cinema Club

Simon Baker, Kaitlin Olson and comedian Reggie Watts

Krysten Ritter, Blake Griffin and musical guest Bob Mould

Katey Sagal, Hunter Pence and extreme pumpkin carver Tom Nardone

Chelsea Handler, Nat Faxon and musical guest NeedToBreathe

John C. Reilly, Casey Wilson and musical guest Cory Chisel and The Wandering Sons