Season 20 Details Casts Episode Lists of Season 20 Title Season 20 Genres Talk Comedy Air Date 2012-01-03 Episode Runtime 01 Hours 03 Minutes Season Number 20 Episode Count On Season 20 205 Production Companies Universal Television, Big Dog Productions, Nelson Page Entertainment, Nerd Corps Productions V.1 Inc., NBC Studios, Universal Media Studios Jay Leno Self - Host Episode 1 2012-01-03 Whitney Cummings, Nicole... Episode 2 2012-01-04 Tracy Morgan, Rick & Core... Episode 3 2012-01-05 Michelle Williams, Josh L... Episode 4 2012-01-06 Glenn Close, Trevor Noah,... Episode 5 2012-01-09 Janet Jackson, Larry the ... Episode 6 2012-01-10 Queen Latifah, Paul... Episode 7 2012-01-11 Liam Neeson, Jack's Manne... Episode 8 2012-01-12 Gerard Butler, Betty Whit... Episode 9 2012-01-13 Tilda Swinton, Jennifer H... Episode 10 2012-01-17 Sam Worthington, Sherri S... Episode 11 2012-01-18 Jennifer Garner, Ross Mat... Episode 12 2012-01-19 Wanda Sykes... Episode 13 2012-01-20 Steven Tyler, Ryan Seacre... Episode 14 2012-01-30 Madonna, Chris Colfer, Jo... Episode 15 2012-01-31 Michelle Obama, Mark Harm... Episode 16 2012-02-01 Daniel Radcliffe, Vanessa... Episode 17 2012-02-02 Drew Barrymore, Blake She... Episode 18 2012-02-03 Debra Messing, Jean Dujar... Episode 19 2012-02-06 Dwayne Johnson, Miranda C... Episode 20 2012-02-07 Chelsea Handler, Jon Hunt... Episode 21 2012-02-08 Chris Pine, Lisa Lampanel... Episode 22 2012-02-09 Denzel Washington, Octavi... Episode 23 2012-02-10 Rachel McAdams, Cee-Lo Gr... Episode 24 2012-02-13 Jennifer Lopez, the Civil... Episode 25 2012-02-14 Tyler Perry, Alexandra We... Episode 26 2012-02-15 Bill Maher, Punch Brother... Episode 27 2012-02-16 Amanda Seyfried, Billy Ga... Episode 28 2012-02-17 Christina Aguilera, Dave ... Episode 29 2012-02-20 Taylor Swift, Michael Cla... Episode 30 2012-02-21 Bill O'Reilly, Rob Riggle... Episode 31 2012-02-22 Tim Allen, Rocket City Re... Episode 32 2012-02-23 Meredith Vieira, Jackson ... Episode 33 2012-02-24 Jennifer Aniston, Adam Le... Episode 34 2012-02-27 Megan Fox, Michel Hazanav... Episode 35 2012-02-28 Rob Schneider, Khloe Kard... Episode 36 2012-02-29 Sen. John McCain, Elizabe... Episode 37 2012-03-01 Julianne Moore, Dr. Brady... Episode 38 2012-03-02 Emily Blunt, Geoff Stults... Episode 39 2012-03-12 Jessica Simpson, Adam Car... Episode 40 2012-03-13 Jonah Hill, Bethenny Fran... Episode 41 2012-03-14 Channing Tatum, Drew Bree... Episode 42 2012-03-15 Kiefer Sutherland, Kathry... Episode 43 2012-03-16 Jimmy Fallon, 8-year-old ... Episode 44 2012-03-19 Jamie Lee Curtis, Armie H... Episode 45 2012-03-20 Rep. Ron Paul, Frank Cali... Episode 46 2012-03-21 Kim Kardashian... Episode 47 2012-03-22 Arsenio Hall, Lily Collin... Episode 48 2012-03-23 Christina Aguilera, Melan... Episode 49 2012-03-26 Elizabeth Banks, Carson D... Episode 50 2012-03-27 The Pierces... Episode 51 2012-03-28 Rainn Wilson, Debbie Gibs... Episode 52 2012-03-29 Piers Morgan, Liam Hemswo... Episode 53 2012-03-30 Nicole Richie, Alan Jacks... Episode 54 2012-04-02 Betty White, D.J. Pauly D... Episode 55 2012-04-03 Maya Rudolph, Jason Biggs... Episode 56 2012-04-04 David Gregory, Cee-Lo Gre... Episode 57 2012-04-05 Zac Efron, Jennie Garth, ... Episode 58 2012-04-06 Kristin Chenoweth, Julie ... Episode 59 2012-04-09 Jane Lynch, Kevin Hart, E... Episode 60 2012-04-10 Josh Hutcherson, Rachel M... Episode 61 2012-04-11 Albert Brooks, Austin... Episode 62 2012-04-12 Blake Shelton, Chris Diam... Episode 63 2012-04-13 Jason Segel, Anna Faris, ... Episode 64 2012-04-23 Jesse Tyler Ferguson, Aub... Episode 65 2012-04-24 Jack Black, Daniel Holzma... Episode 66 2012-04-25 Adam Levine, Ziggy Marley... Episode 67 2012-04-26 Diane Keaton, Natalie Cou... Episode 68 2012-04-27 Mel Gibson, the Wanted... Episode 69 2012-04-30 Steve Martin, Rashida Jon... Episode 70 2012-05-01 Cameron Diaz, William Sha... Episode 71 2012-05-02 Scarlett Johansson, Blake... Episode 72 2012-05-03 Robert Downey Jr., Kathar... Episode 73 2012-05-04 Kristen Stewart, James Mo... Episode 74 2012-05-07 Michelle Pfeiffer, Bear G... Episode 75 2012-05-08 Rick Santorum, Taylor Kit... Episode 76 2012-05-09 Garry Shandling, Alison B... Episode 77 2012-05-10 Howie Mandel, Vinny Guada... Episode 78 2012-05-11 Jenna Fischer, Jay Mohr... Episode 79 2012-05-14 Kourtney, Kim & Khloe Kar... Episode 80 2012-05-15 Wanda Sykes, David Hassel... Episode 81 2012-05-16 Joel McHale, Jarod Miller... Episode 82 2012-05-17 Hugh Laurie, Robert Griff... Episode 83 2012-05-18 Sherri Shepherd, Julianne... Episode 84 2012-05-21 Kevin Costner, Bailee Mad... Episode 85 2012-05-22 Josh Brolin, Ali Wentwort... Episode 86 2012-05-23 Charlize Theron, Jeffrey ... Episode 87 2012-05-24 Glenn Close, the winner o... Episode 88 2012-05-25 Gen. Colin Powell, Greg G... Episode 89 2012-06-04 Martin Short, Aubrey Plaz... Episode 90 2012-06-05 Emma Stone, Chris Hemswor... Episode 91 2012-06-06 Julia Louis-Dreyfus, the ... Episode 92 2012-06-07 Catherine Zeta-Jones, Lou... Episode 93 2012-06-08 Tom Cruise, skydivers Fel... Episode 94 2012-06-11 Elizabeth Banks, Dan Patr... Episode 95 2012-06-12 Patrick Duffy, Linda Grey... Episode 96 2012-06-13 Terry Bradshaw, Ernie Bro... Episode 97 2012-06-14 Penelope Cruz, Rick Harri... Episode 98 2012-06-15 Salma Hayek, Adam Brody, ... Episode 99 2012-06-18 Steve Carell, Cory Booker... Episode 100 2012-06-19 Matthew McConaughey, Nata... Episode 101 2012-06-20 Andy Samberg, Seth MacFar... Episode 102 2012-06-21 Katy Perry, Needtobreathe... Episode 103 2012-06-22 Chris Pine, Rachael Ray, ... Episode 104 2012-06-25 Louis C.K., Lolo Jones, D... Episode 105 2012-06-26 Matt LeBlanc, Sig Hansen ... Episode 106 2012-06-27 Mila Kunis, Jim Norton, J... Episode 107 2012-06-28 Tyler Perry, Rhys Ifans, ... Episode 108 2012-06-29 Andrew Garfield, Of Monst... Episode 109 2012-07-09 Wanda Sykes, Rob Riggle, ... Episode 110 2012-07-10 Zachary Levi, B.o.B.... Episode 111 2012-07-11 Morgan Freeman,... Episode 112 2012-07-12 Denis Leary, Olivia Munn,... Episode 113 2012-07-13 Dana Carvey, Nicki Minaj... Episode 114 2012-07-16 Charlie Sheen... Episode 115 2012-07-17 Kate Beckinsale, Adam Car... Episode 116 2012-07-18 Newt Gingrich, Nicole... Episode 117 2012-07-19 Rachel Weisz, Aaron Paul... Episode 118 2012-07-20 Ben Stiller, Rose Byrne, ... Episode 119 2012-07-23 Vince Vaughn, Travis Past... Episode 120 2012-07-24 Colin Farrell, Jenni... Episode 121 2012-07-25 Jessica Biel, Kevin Smith... Episode 122 2012-07-26 Julie Scardina, Dwyane Wa... Episode 123 2012-07-27 Jeremy Renner, Betty Whit... Episode 124 2012-08-13 Michelle Obama, Norah Jon... Episode 125 2012-08-14 Kelsey Grammer, Jordan Bu... Episode 126 2012-08-15 Sylvester Stallone, Missy... Episode 127 2012-08-16 Kristen Bell, Ryan Lochte... Episode 128 2012-08-17 Jason Statham, Allyson Fe... Episode 129 2012-08-20 Maya Rudolph, Jeff Foxwor... Episode 130 2012-08-21 Shia LaBeouf, Jean-Claude... Episode 131 2012-08-22 Katie Couric, Dax Shepard... Episode 132 2012-08-23 Kirsten Dunst, Chris Matt... Episode 133 2012-08-24 Howie Mandel, Alejandro E... Episode 134 2012-08-27 Dennis Miller, Joshua Rad... Episode 135 2012-08-28 Owl City with Carly Rae J... Episode 136 2012-08-29 Bill Maher, Tristan Prett... Episode 137 2012-08-30 Savannah Guthrie, Dolph L... Episode 138 2012-08-31 Lauren Graham, Dan Patric... Episode 139 2012-09-04 Kevin Hart, Rep. Ron Paul... Episode 140 2012-09-05 Adam Levine, Magic Johnso... Episode 141 2012-09-06 Ellen DeGeneres, Josh Luc... Episode 142 2012-09-07 Matthew Perry, Meghan McC... Episode 143 2012-09-17 Richard Gere, Anthony Rob... Episode 144 2012-09-18 Justin Timberlake, Steve ... Episode 145 2012-09-19 Amy Poehler, Joe Scarboro... Episode 146 2012-09-20 Viola Davis, Paul Wesley,... Episode 147 2012-09-21 Zooey Deschanel, Anthony ... Episode 148 2012-09-24 David Spade, Giancarlo Es... Episode 149 2012-09-25 Ann Romney, Seth MacFarla... Episode 150 2012-09-26 Kirstie Alley, Mike... Episode 151 2012-09-27 Liam Neeson, Lisa Lampane... Episode 152 2012-09-28 Christina Aguilera, Sherr... Episode 153 2012-10-01 Bryan Cranston, Rebel Wil... Episode 154 2012-10-02 Carol Burnett, Armie Hamm... Episode 155 2012-10-03 Christina Applegate, Apol... Episode 156 2012-10-04 Ben Affleck, Octavia Spen... Episode 157 2012-10-05 Colin Farrell, Medal of H... Episode 158 2012-10-08 Arnold Schwarzenegger, Bu... Episode 159 2012-10-09 Tyler Perry, Oscar Pistor... Episode 160 2012-10-10 Chelsea Handler, Placido ... Episode 161 2012-10-11 Terry Bradshaw, Mark Kell... Episode 162 2012-10-12 Whitney Cummings, Rove Mc... Episode 163 2012-10-22 Halle Berry, Ali Wentwort... Episode 164 2012-10-23 Denzel Washington, Richar... Episode 165 2012-10-24 President Barack Obama, N... Episode 166 2012-10-25 Russell Brand, Jane Lynch... Episode 167 2012-10-26 Sarah Silverman, Paula De... Episode 168 2012-10-29 Simon Cowell, Britney Spe... Episode 169 2012-10-30 John C. Reilly, Jenni... Episode 170 2012-10-31 Taylor Lautner, Lior Such... Episode 171 2012-11-01 Jamie Lee Curtis, Maggie ... Episode 172 2012-11-02 Marion Cotillard, Olate D... Episode 173 2012-11-05 Kristen Stewart, Dax Shep... Episode 174 2012-11-07 Daniel Craig, Dave Salmon... Episode 175 2012-11-08 Sally Field, Chris Matthe... Episode 176 2012-11-09 Meredith Vieira & Richard... Episode 177 2012-11-12 Lea Michele, Nev Schulman... Episode 178 2012-11-13 Keira Knightley, Whitney ... Episode 179 2012-11-14 Helen Hunt, Paul... Episode 180 2012-11-15 Tim Allen, Nolan Gould, S... Episode 181 2012-11-16 Chris Matthews, the Mowgl... Episode 182 2012-11-19 Jennifer Lawrence, Phil &... Episode 183 2012-11-20 Lindsay Lohan, David Greg... Episode 184 2012-11-21 Joseph Gordon-Levitt, Kri... Episode 185 2012-11-22 Bradley Cooper, Natasha L... Episode 186 2012-11-26 Jim Parsons, Maggie Eliza... Episode 187 2012-11-27 Julie Bowen,... Episode 188 2012-11-28 Wanda Sykes, Blake Shelto... Episode 189 2012-11-29 Newt Gingrich, Ron Shirle... Episode 190 2012-11-30 Marisa Tomei, Carson Daly... Episode 191 2012-12-03 Gerard Butler, Olivia Mun... Episode 192 2012-12-04 Khloe Kardashian Odom, Ad... Episode 193 2012-12-05 Don Johnson, Julie Scardi... Episode 194 2012-12-06 Bill O'Reilly, Krysten Ri... Episode 195 2012-12-07 Leslie Mann, Jim Rome, Ga... Episode 196 2012-12-10 Matt Damon, Chris Pratt, ... Episode 197 2012-12-11 Ewan McGregor, Bailee Mad... Episode 198 2012-12-12 Albert Brooks, Kerry Wash... Episode 199 2012-12-13 Hugh Jackman, Maria Shara... Episode 200 2012-12-14 Bette Midler, Judd Apatow... Episode 201 2012-12-17 Megan Fox, Johnny Manziel... Episode 202 2012-12-18 Quentin Tarantino, LeAnn ... Episode 203 2012-12-19 Jamie Foxx, Carl Reiner, ... Episode 204 2012-12-20 Katherine Heigl, Marjorie... Episode 205 2012-12-21 Terry Bradshaw, Elle Fann...