12x40 - Lady Gaga, Darby Stanchfield, The Preatures

March 13, 2014

Musical guest Lady Gaga; actress Darby Stanchfield ("Scandal"); musical guest The Preatures.

12x41 - Lil' Wayne, Willie Nelson, Los Lonely Boys

March 14, 2014

Rapper Lil Wayne; panelist and musical guest Willie Nelson; Los Lonely Boys sits in with Cleto and the Cletones.

12x42 - Uma Thurman, Jai Courtney, Amos Lee

March 17, 2014

Actress Uma Thurman; actor Jai Courtney; Amos Lee performs.

12x43 - Ashley Judd, Howie Mandel, Capital Cities

March 18, 2014

Actress Ashley Judd; TV host Howie Mandel; Sam Smith performs.

12x44 - Jeremy Piven, Zoe Kravitz, YG

March 19, 2014

Actor Jeremy Piven; actress Zoe Kravitz; YG performs.

12x45 - Don Cheadle, Tony Goldwyn, Enrique Iglesias

March 20, 2014

Actor Don Cheadle; actor Tony Goldwyn; Enrique Iglesias performs.

12x46 - Jennifer Connelly, Rohan Chand, Sharon Jones & the Dap-Kings

March 24, 2014

Actress Jennifer Connelly; actor Rohan Chand; Sharon Jones & the Dap-Kings perform.

12x47 - Nicole Kidman, Alyson Hannigan, Jerrod Niemann

March 25, 2014

Actress Nicole Kidman; actress Alyson Hannigan; Jerrod Niemann performs.

12x48 - Julia Louis-Dreyfus, Michael Pena, London Grammar

March 26, 2014

Actress Julia Louis-Dreyfus; actor Michael Peña; London Grammar performs.

12x49 - Jason Bateman, Katie Lowes, John Legend

March 27, 2014

Actor Jason Bateman; actress Katie Lowes; John Legend performs.

12x50 - Mindy Kaling, Jim Jefferies, Dan Croll

March 31, 2014

Actress Mindy Kaling; comic Jim Jefferies; Dan Croll performs.

12x51 - David Duchovny, Danai Gurira, Pete Davidson

April 1, 2014

12x52 - Bill Clinton, Manny Pacquiao

April 2, 2014

President Bill Clinton; Manny Pacquiao performs.

12x53 - Emma Stone, Jeff Perry, Schoolboy Q

April 3, 2014

Actress Emma Stone; actor Jeff Perry; Schoolboy Q performs.

12x54 - Episode 54

April 10, 2014

Actor Seth MacFarlane; actor Paul Bettany; Sam Smith performs; the 2014 ESPYS host Drake.

12x55 - Behind the Scandalabra

April 17, 2014

"Scandal" creator Shonda Rhimes discusses the season three finale; secrets from the "Scandal" cast and a previously unseen blooper reel; Kimmel's Spanish-language spinoff, "Escandalo."

12x56 - Kate Upton, Cole Hauser, Neon Trees

April 9, 2014

Model Kate Upton; actor Cole Hauser; Neon Trees performs.

12x57 - Seth MacFarlane, Paul Bettany, Sam Smith

April 10, 2014

Actor Seth MacFarlane; actor Paul Bettany; Sam Smith performs.

12x58 - Episode 58

April 23, 2014

Actor Tim Allen; actress Ginnifer Goodwin; Foster the People perform.

12x59 - Episode 59

April 24, 2014

Actress Julie Bowen; comic Dave Attell; Cut Copy performs.

12x60 - Tim Allen, Ginnifer Goodwin, Foster the People

April 23, 2014

Actor Tim Allen; actress Ginnifer Goodwin; Foster the People perform.

12x61 - Julie Bowen, Dave Attell, Cut Copy

April 29, 2014

Actors Eric Stonestreet and Jesse Tyler Ferguson; TV host Robin Roberts.

12x62 - Jennifer Lopez, Elisabeth Moss, Sleepy Man Banjo Boys

April 28, 2014

Actress Jennifer Lopez; actress Elizabeth moss; Sleepy Man Banjo Boys perform.

12x63 - Eric Stonestreet, Jesse Tyler Ferguson, Robin Roberts

May 29, 2014

Actors Eric Stonestreet and Jesse Tyler Ferguson; reporter Robin Roberts.

12x64 - Kathy Griffin, Tony Hale, Franz Ferdinand

April 30, 2014

Comic Kathy Griffin; actor Tony Hale; Franz Ferdinand performs.

12x65 - Sandra Oh, 'Science Bob' Pflugfelder, Boy George

May 1, 2014

Actress Sandra Oh; "Science Bob" Pflugfelder; Boy George performs.

12x66 - Episode 66

May 5, 2014

Actress Sally Field; actress Julia Roberts; Future Islands performs.

12x67 - Episode 67

May 6, 2014

Actor Jon Hamm; actress Emma Roberts; Kid Ink performs with Travis Barker.

12x68 - Pharrell Williams

May 7, 2014

Musician Pharrell Williams is interviewed and performs.

12x69 - Kobe Bryant, Lake Bell, Pharrell Williams

May 15, 2014

Actress Shailene Woodley; actor Aasif Mandvi; Iggy Azalea performs.

12x70 - Episode 70

May 16, 2014

Actor Nathan Lane; author Adam Carolla; Royal Blood performs.

12x71 - Shailene Woodley, Aasif Mandvi, Iggy Azalea

May 15, 2014

Actress Shailene Woodley; actor Aasif Mandvi; Iggy Azalea performs.

12x72 - 72

May 14, 2014

12x73 - George Stephanopoulos, Andi Dorfman, Charles Bradley

May 19, 2014

TV host George Stephanopoulos; reality-TV star Andi Dorfman.

12x74 - Johnny Knoxville, Dave Salmoni, Timeflies

May 20, 2014

Actor Johnny Knoxville; animal trainer Dave Salmoni; Timeflies performs.

12x75 - Adam Sandler, Elle Fanning, Lykke Li

May 21, 2014

Actor Adam Sandler; actress Elle Fanning; Lykke Li performs.

12x76 - Patricia Heaton, T.J. Miller, Little Dragon

May 22, 2014

Actress Patricia Heaton; actor T.J. Miller; Little Dragon performs.

12x77 - Game Night

June 5, 2014

Actor Martin Lawrence.

12x78 - Episode 78

June 5, 2014

Scripps National Spelling Bee champions; rapper Curtis "50 Cent" Jackson; actress Jenny Slate; OneRepublic performs.

12x79 - Curtis '50 Cent' Jackson, Jenny Slate, OneRepublic

June 10, 2014

Rapper Curtis "50 Cent" Jackson; Jenny Slate ("Obvious Child"). Also: OneRepublic perform.

12x80 - Gerard Butler, Meagan Goode, Matisyahu

June 10, 2014

Actor Gerard Butler; actress Meagan Goode; Matisyahu performs.

12x81 - Robert Pattinson, Pablo Schreiber, Nico & Vinz

June 12, 2014

Actor Robert Pattinson; actor Pablo Schreiber; Nico & Vinz perform.

12x82 - Lena Headey, Jungle, LA Kings, Bill de Blasio, Eric Garcetti

June 16, 2014

Actress Lena Headey; Jungle performs.

12x83 - Ludacris, Kesha, Josh Groban, Brad Paisley, Michael Stevens

June 17, 2014

Musicians Ludacris, Kesha, Josh Groban and Brad Paisley; Internet personality Michael Stevens; Brad Paisley performs.

12x84 - Mike Tyson, Jason Momoa, Young Fathers

June 19, 2014

Former boxer Mike Tyson; Jason Momoa ("Road to Paloma"). Also: Young Fathers perform.

12x85 - Eric Bana, Tony Parker, Linkin Park

June 23, 2014

2014 NBA Champions San Antonio Spurs’ Tony Parker, Eric Bana, Music from Linkin Park

12x86 - Episode 86

June 24, 2014

Actress Roseanne Barr; actor Eric Dane; Tech N9NE performs.

12x87 - Episode 87

June 25, 2014

Actor Gary Oldman; actor Nathan Fielder; Bleachers performs.

12x88 - Episode 88

June 26, 2014

Actor Bob Newhart; actress Nicola Peltz; Spoon performs.

12x89 - Episode 89

June 30, 2014

Actress Melissa McCarthy; actor Marc Maron; Röyksopp & Robyn perform.

12x91 - Episode 91

July 2, 2014

Actress Susan Sarandon; actor Ramon Rodriguez; Robin Thicke performs; professional baseball player Yasiel Puig.

12x92 - Episode 92

July 3, 2014

Actress Jessica Alba; actor Ben Falcone; Sia performs.

12x93 - Jessica Alba, Ben Falcone, Sia

July 21, 2014

Jessica Alba ("Sin City: A Dame to Kill For"); Ben Falcone ("Tammy"). Also: Sia performs.

12x94 - Chris Pratt, Zoe Saldana, Dave Bautista, Vin Diesel, Bradley Cooper

July 22, 2014

Actor John Stamos; comic Todd Glass; OK Go performs.

12x95 - John Stamos, Todd Glass, OK Go

July 23, 2014

John Stamos ("My Man Is a Loser"); comedian Todd Glass. Also: OK Go perform.

12x96 - Gordon Ramsay, Bobcat Goldthwait, Common

July 24, 2014

Gordon Ramsay ("Hotel Hell"); Bobcat Goldthwait ("Willow Creek"). Also: Common performs.

12x97 - Justin Theroux, Angie Harmon, 5 Seconds of Summer

July 25, 2014

Justin Theroux ("The Leftovers"); Angie Harmon ("Rizzoli & Isles"). Also: 5 Seconds of Summer perform.

12x98 - Episode 98

July 29, 2014

Actor Daniel Radcliffe; actress Abigail Spencer; Kiesza performs.

12x99 - Episode 99

July 30, 2014

Actor Eric McCormack; Self performs.

12x100 - Episode 100

July 31, 2014

Actress Kerry Washington; musician Tom Petty; Tom Petty & the Heartbreakers perform.

12x101 - Kerry Washington, Tom Petty, Tom Petty and The Heartbreakers

August 4, 2014

Reality-TV star Kim Kardashian; actors Damon Wayans Jr. and Jake Johnson; Disclosure and Sam Smith perform.

12x102 - Episode 102

August 5, 2014

Actor Ted Danson; actress Eva Green; Jake Owen performs.

12x103 - Episode 103

August 6, 2014

Actress Chloë Grace Moretz; The Mighty Mighty Bosstones performs.

12x104 - Episode 104

August 7, 2014

Actor Mickey Rourke; actress Jordana Brewster; Banks performs.

12x105 - Mickey Rourke, Jordana Brewster, Banks

August 26, 2014

Actor Idris Elba; reality-TV personality Tim Gunn; The White Buffalo performs.

12x106 - Idris Elba, Tim Gunn, The White Buffalo

August 27, 2014

Actress Jennifer Aniston.

12x107 - Episode 107

August 28, 2014

Actor Aaron Paul; Ed Sheeran performs.

12x108 - Episode 108

August 29, 2014

Paolo Nutini performs.

12x109 - Kathy Griffin, Vinessa Shaw, Sharon Van Etten

September 2, 2014

Actress Eva Longoria; Wiz Khalifa performs.

12x110 - Episode 110

September 3, 2014

Actress Gwyneth Paltrow; actor Terry Crews; Shawn Mendes performs.

12x111 - Episode 111

September 4, 2014

Actress Taraji P. Henson; Hunter Hayes performs.

12x112 - Episode 112

September 5, 2014

Sports analyst Terry Bradshaw; actors Mike Smith, John Paul Tremblay and Robb Wells; The Kooks perform.

12x113 - Terry Bradshaw, Trailer Park Boys Mike Smith, John Paul Tremblay & Robb Wells, The Kooks

September 8, 2014

Actress Lena Dunham; actor Ben Schwartz.

12x114 - Episode 114

September 9, 2014

Actor Bill Hader; director Richard Linklater; Jhene Aiko performs.

12x115 - Episode 115

September 10, 2014

TV host Queen Latifah; stock car racing driver Dale Earnhardt Jr.

12x116 - Episode 116

September 11, 2014

Actor Morgan Freeman; reality-TV personality Julianne Hough.

12x117 - Morgan Freeman, Julianne Hough

September 15, 2014

Actress Jane Fonda; actor Ike Barinholtz; Mastodon performs.

12x118 - Episode 118

September 16, 2014

Actors Keegan-Michael Key and Jordan Peele; journalist David Muir; Fall Out Boy performs.

12x119 - Episode 119

September 17, 2014

Actor Ty Burrell; TV personality Len Goodman; Paolo Nutini performs.

12x120 - Episode 120

September 18, 2014

Actress Kaley Cuoco; actor Anthony Anderson; Bastille performs.

12x121 - Kaley Cuoco-Sweeting, Anthony Anderson, Bastille

September 22, 2014

Actress Courteney Cox; actor John Cho; Jason Aldean performs.

12x122 - Courteney Cox, Jason Aldean

September 23, 2014

Actress Viola Davis; TV host Anthony Bourdain; Tove Lo performs.

12x123 - Viola Davis, Anthony Bourdain, Tove Lo

September 24, 2014

Actor Patrick Dempsey; author Lara Spencer; Young Jeezy performs.

12x124 - Patrick Dempsey, Lara Spencer, Young Jeezy

September 25, 2014

Actor Denzel Washington; actress Darby Stanchfield; The Script performs.

12x125 - Denzel Washington, Darby Stanchfield, The Script

September 29, 2014

Actress Jennifer Love Hewitt; actor Clark Gregg; Clean Bandit performs.

12x126 - Jennifer Love Hewitt, Clark Gregg, Clean Bandit

September 30, 2014

Actor Martin Short; animal trainer Dave Salmoni; Steve Aoki performs with Waka Flocka Flame and Travis Barker.

12x127 - Martin Short, Dave Salmoni, Steve Aoki feat. Waka Flocka Flame & Travis Barker

October 1, 2014

Martin Short, Animal Trainer Dave Salmoni, Music from Steve Aoki Feat. Waka Flocka Flame and Travis Barker.

12x128 - Tim Allen, Anna Gunn, The Madden Brothers

October 2, 2014

Actress Ellen Pompeo; actor Norman Reedus; Disclosure performs with Mary J. Blige.

12x129 - Ellen Pompeo, Norman Reedus, Disclosure feat. Mary J. Blige

October 6, 2014

Ellen Pompeo, Norman Reedus, Music from Disclosure feat. Mary J. Blige.

12x130 - Dax Shepard, Karen Gillan, Rixton

October 6, 2014

Dax Shepard, Karen Gillan, Music from Rixton.

12x131 - Billy Crudup, Massimo Bottura, Weezer

October 8, 2014

Actress Kyra Sedgwick; actor Jon Bernthal; Dirty Heads performs.

12x132 - Kyra Sedgwick, Jon Bernthal, Dirty Heads

October 8, 2014

Kyra Sedgwick, Jon Bernthal, Music from Dirty Heads.

12x133 - LL Cool J, Michael Peña, Tinashe feat. Schoolboy Q

October 13, 2014

LL Cool J, Michael Peña, Music from Tinashe Feat. Schoolboy Q.

12x134 - Shia LaBeouf, Michelle Monaghan, T.I.

October 13, 2014

Shia LaBeouf, Michelle Monaghan, Music from T.I.

12x135 - Adam Carolla, Cristela Alonzo, Bob Seger

October 14, 2014

Adam Carolla, Cristela Alonzo, Music from Bob Seger.

12x136 - Chris O'Dowd, Selena Gomez, Kasabian

October 15, 2014

Selena Gomez, Chris O’Dowd, Music from Kasabian.

12x137 - Edward Norton, Portia de Rossi, You + Me

October 27, 2014

"Shark Tank" pitch results.

12x138 - Ice Cube, 'Science Bob' Pflugfelder, Bush

October 20, 2014

Actor Ice Cube; "Science Bob" Pflugfelder; Bush performs.

12x139 - Bill Murray, Jack Black & Kyle Gass

October 21, 2014

Actor Bill Murray; actors Jack Black and Kyle Gass.

12x140 - Edward Norton, Portia de Rossi, You + Me

October 27, 2014

Actress Melissa McCarthy; actor Frank Grillo; Billy Idol performs; "Shark Tank" pitch results.