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Season guide

The Tonight Show with Jay Leno: Season 15

222 episodes Premiered Sep 18, 2006 Updated Sep 25, 2026

Previously on The Tonight Show with Jay Leno

Season 15 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

⚡ Directly follows the overarching narrative developments of The Tonight Show with Jay Leno Season 14.
⚡ Faction dynamics and core character alliances shift under escalating external stakes.
⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
⚡ Sets up serialized story arcs that build directly toward the climactic season finale.

Season 15 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 15 Progress Shield

Last Watched:

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Binge Efficiency Engine

Season 15: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

98%

Mytharc (4): Crucial lore & season climaxes

Core (218): Character development & subplots

Side Quest (0): Standalone / filler

S15·E1 Mytharc

Jason Lee, Elton John

Sep 18, 2006

S15·E2 Core

Justin Timberlake, Sarah Silverman

Sep 19, 2006

S15·E3 Core

Steve Carell, Jamie Lee Curtis, Joan Jett

Sep 20, 2006

S15·E4 Core

Teri Hatcher, Jon Heder, Kenny Chesney

Sep 21, 2006

S15·E5 Core

Calista Flockhart, Harland Williams, Gomez

Sep 22, 2006

S15·E6 Core

Eva Longoria, Cole and Dylan Sprouse, Death Cab for Cutie

Sep 25, 2006

S15·E7 Core

Adrien Brody, Chef G. Garvin, Alan Jackson

Sep 26, 2006

S15·E8 Core

Evangeline Lilly, Magic Johnson, Diana Krall

Sep 27, 2006

S15·E9 Core

Ashton Kutcher, Jenna Fischer, Amos Lee

Sep 28, 2006

S15·E10 Core

Jessica Simpson, Bill O'Reilly, Snow Patrol

Sep 29, 2006

S15·E11 Core

Wanda Sykes, Chris Matthews, John Mayer

Oct 2, 2006

S15·E12 Core

Helen Mirren, B.J. Novak, Jet

Oct 3, 2006

S15·E13 Core

Michael Clarke Duncan, Lisa Lampanelli, Rod Stewart

Oct 4, 2006

S15·E14 Core

Bob Newhart, Kristin Chenoweth, Camp Freddy

Oct 5, 2006

S15·E15 Core

Jarod Miller, Bradley Whitford, Ray LaMontagne

Oct 6, 2006

S15·E16 Core

Tina Fey, Annika Sorenstam, Fergie

Oct 9, 2006

S15·E17 Core

Tiger Woods, Emeril Lagasse, Chingy

Oct 10, 2006

S15·E18 Core

Arnold Schwarzenegger, Heidi Klum, Le Rêve

Oct 11, 2006

S15·E19 Core

Sandra Bullock, Michael Caine, Chris Young

Oct 12, 2006

S15·E20 Core

David Gregory, Ali Larter, Edie Brickell & The New Bohemians

Oct 13, 2006

S15·E21 Core

Hugh Jackman, Tim McGraw

Oct 16, 2006

S15·E22 Core

Jennifer Love Hewitt, Tim Burton, Barry Manilow

Oct 17, 2006

S15·E23 Core

Annette Bening, Mad Scientist David Willey, Sarah McLachlan

Oct 18, 2006

S15·E24 Core

Sally Field, Bug Man Ruud Kleinpaste, Kevin Federline

Oct 19, 2006

S15·E25 Core

John Landis & The Spiridellis Brothers, JoJo

Oct 20, 2006

S15·E26 Core

Tim Allen, 8-year-old opera singer Gwyn Mackenzie, Carrie Underwood

Oct 30, 2006

S15·E27 Core

Roseanne Barr, Sharon Osbourne, Marilyn Manson

Oct 31, 2006

S15·E28 Core

Emma Thompson, Spencer Breslin, Regina Spektor

Nov 1, 2006

S15·E29 Core

Penelope Cruz, John Stamos, "Weird Al" Yankovic

Nov 2, 2006

S15·E30 Core

Russell Crowe, Rachael Ray, Kellie Pickler

Nov 3, 2006

S15·E31 Core

Hugh Laurie, America Ferrara, the Cheetah Girls

Nov 6, 2006

Hugh Laurie; America Ferrara; the Cheetah Girls.

S15·E32 Core

Courtney Love, Brad Garrett, OK Go

Nov 7, 2006

S15·E33 Core

Ellen DeGeneres, Fred Willard, Tony Bennett

Nov 8, 2006

S15·E34 Core

Borat, Martha Stewart, Damian Rice

Nov 9, 2006

S15·E35 Core

Lindsay Lohan, Emmitt Smith, Army Of Anyone

Nov 10, 2006

S15·E36 Core

Sharon Stone, Patricia Arquette, Vince Gill

Nov 13, 2006

S15·E37 Core

Rachel Weisz, Nick Cannon, Il Divo

Nov 14, 2006

S15·E38 Core

Jaime Pressly, Adventurer Bear Grylls, Cirque du Soleil: The Beatles - LOVE

Nov 15, 2006

S15·E39 Core

Emilio Estevez, D.L. Hughley, Josh Groban

Nov 16, 2006

S15·E40 Core

Kate Winslet, Wilmer Valderrama, Buddy Guy

Nov 17, 2006

S15·E41 Core

Demi Moore, Ron Livingston, Chris Cornell

Nov 20, 2006

S15·E42 Core

Denzel Washington, Catherine O'Hara, Jerry Lee Lewis with Kid Rock

Nov 21, 2006

S15·E43 Core

Amazing Animals With Julie Scardina, Ellen Pompeo, Nelly Furtado

Nov 22, 2006

S15·E44 Core

Howie Mandel, Nelly Furtado

Nov 23, 2006

S15·E45 Core

Kristin Davis, Ralphie May

Nov 24, 2006

S15·E46 Core

Cameron Diaz, Gwyn Mackenzie, The Wreckers

Nov 27, 2006

S15·E47 Core

Lucy Liu, Bob Saget, Snoop Dogg

Nov 28, 2006

S15·E48 Core

Al Gore, Karolina Kurkova, Fantasia

Nov 29, 2006

S15·E49 Core

Morgan Freeman, Josh Duhamel, Barenaked Ladies

Nov 30, 2006

S15·E50 Core

Sen. Barack Obama, Maggie Gyllenhaal, Taylor Hicks

Dec 1, 2006

S15·E51 Core

Cate Blanchett, Larry the Cable Guy, Corinne Bailey Rae

Dec 4, 2006

S15·E52 Core

Dennis Miller, LaDainian Tomlinson, K.T. Tunstall

Dec 5, 2006

S15·E53 Core

Jack Black, Chef G. Garvin, Paulina Rubio

Dec 6, 2006

S15·E54 Core

Mel Gibson, Bil Dwyer, Ludacris

Dec 7, 2006

S15·E55 Core

Sylvester Stallone, Parminder Nagra, Seal

Dec 8, 2006

S15·E56 Core

Former President Jimmy Carter, Edward Norton, Panic! At the Disco

Dec 11, 2006

S15·E57 Core

Jamie Foxx, Brad Paisley

Dec 12, 2006

S15·E58 Core

Dakota Fanning, Aaron Eckhart, Twisted Sister

Dec 13, 2006

S15·E59 Core

Leonardo DiCaprio, Naomi Watts, The Goo Goo Dolls

Dec 14, 2006

S15·E60 Core

Tobey Maguire, spider expert Jules Sylvester, Sarah McLachlan

Dec 15, 2006

S15·E61 Core

Samuel L. Jackson, Nick Thune, Scott Weiland

Dec 18, 2006

S15·E62 Core

Robert De Niro, Jennifer Hudson

Dec 19, 2006

S15·E63 Core

Will Smith, Pamela Anderson, Richard Roeper, The Blind Boys of Alabama

Dec 20, 2006

S15·E64 Core

Matthew McConaughey, Opie and Anthony, The Killers

Dec 21, 2006

S15·E65 Core

Dustin Hoffman, Abigail Breslin, African Children's Choir

Dec 22, 2006

S15·E66 Core

George Clooney, Maria Lark, Unwritten Law

Jan 2, 2007

S15·E67 Core

Justin Timberlake, Masi Oka, Matisyahu

Jan 3, 2007

S15·E68 Core

Hilary Swank, Tom Papa, Akon

Jan 4, 2007

S15·E69 Core

Terry Bradshaw, baker Marjorie Johnson, Papa Roach

Jan 5, 2007

S15·E70 Core

Kiefer Sutherland, Betty White, Chris Daughtry

Jan 8, 2007

S15·E71 Core

Ben Affleck, Chris Leak, Jewel

Jan 9, 2007

S15·E72 Core

Sen. John Edwards, Terri Irwin, Mindy Smith

Jan 10, 2007

S15·E73 Core

Helen Mirren, Isaac Mizrahi, Los Lonely Boys

Jan 11, 2007

S15·E74 Core

Renée Zellweger, Joy Behar, Common

Jan 12, 2007

S15·E75 Core

Paula Abdul, D.L. Hughley, Tyrese feat. Lil Jon

Jan 15, 2007

S15·E76 Core

Matt Lauer, John & Margaret Ragonese, The All-American Rejects

Jan 16, 2007

S15·E77 Core

Meredith Vieira, Ryan Reynolds, Robin Thicke

Jan 17, 2007

S15·E78 Core

James Woods, Lisa Lampanelli, Five For Fighting

Jan 18, 2007

S15·E79 Core

Don Rickles, John Stamos, Rocco DeLuca & The Burden

Jan 19, 2007

S15·E80 Core

Jennifer Garner, Ty Pennington, Bow Wow

Jan 22, 2007

S15·E81 Core

Jon Cryer, Jeff Garcia, Switchfoot

Jan 23, 2007

S15·E82 Core

Sienna Miller, Phyllis Diller, Branford Marsalis Quartet

Jan 24, 2007

Actress Sienna Miller ("Factory Girl"); Phyllis Diller; Branford Marsalis performs "Fate" from his CD Braggtown; Jay Interviews George W. Bush.

S15·E83 Core

Wanda Sykes, Sendhil Ramamurthy, The Bird And The Bee

Jan 25, 2007

S15·E84 Core

Rebecca Romijn, Bob Saget, Rodrigo Y Gabriela

Jan 26, 2007

S15·E85 Core

Bill Cosby, Mary Lynn Rajskub, Katharine McPhee

Jan 29, 2007

S15·E86 Core

Diane Keaton, Ivanka Trump, The Soweto Gospel Choir

Jan 30, 2007

S15·E87 Core

Forest Whitaker, America Ferrera, Daniel Powter

Jan 31, 2007

S15·E88 Core

Abigail Breslin, Amazing Animals With Julie Scardina, Christina Aguilera

Feb 1, 2007

S15·E89 Core

Cuba Gooding Jr., Miss USA Tara Conner, The Game

Feb 2, 2007

S15·E90 Core

Clint Eastwood, Jennifer Hudson, John Waite and Alison Krauss

Feb 5, 2007

S15·E91 Core

Penelope Cruz, Tyler Perry, James Hunter

Feb 6, 2007

S15·E92 Core

Hugh Grant, Himalayan Bears With Julie Scardina, Norah Jones

Feb 7, 2007

S15·E93 Core

Mark Wahlberg, Sarah Silverman, Mat Kearney

Feb 8, 2007

S15·E94 Core

Drew Barrymore, Kyle Krichbaum, Solomon Burke

Feb 9, 2007

S15·E95 Core

Nicolas Cage, D.J. Sampson & Sam Ballerini, The Fray

Feb 12, 2007

S15·E96 Core

Dennis Miller, baker Marjorie Johnson, Taylor Swift

Feb 13, 2007

S15·E97 Core

Beyoncé, Charles Barkley, Kenny Wayne Shepherd

Feb 14, 2007

S15·E98 Core

Jim Carrey, Gov. Tom Vilsack, Dustin Kensrue

Feb 15, 2007

S15·E99 Core

Teri Hatcher, Rhys Ifans, Omarion

Feb 16, 2007

S15·E100 Core

Simon Cowell, Randy Jackson & Ryan Seacrest, Tiki Barber, Silversun Pickups

Feb 19, 2007

S15·E101 Core

Bill Maher, skydiving accident survivor Michael Holmes, Rodney Atkins

Feb 20, 2007

S15·E102 Core

Jaime Pressly, Gordon Ramsay, Gomez

Feb 21, 2007

S15·E103 Core

Peter O'Toole, Christina Ricci, Hellogoodbye

Feb 22, 2007

S15·E104 Core

Animals With Joan Embery, William H. Macy, John Mellencamp

Feb 23, 2007

S15·E105 Core

Courteney Cox, Richard Roeper, Plain White Ts

Feb 26, 2007

S15·E106 Core

John Travolta, Katt Williams, Everclear

Feb 27, 2007

S15·E107 Core

Tim Allen, Hollywood's Most Talented Animals, Fergie

Feb 28, 2007

S15·E108 Core

Howie Mandel, Chris Hansen, Korn

Mar 1, 2007

S15·E109 Core

Queen Latifah, Gerard Butler, Buckcherry

Mar 2, 2007

S15·E110 Core

Mark Wahlberg, Brad Garrett, My Chemical Romance

Mar 12, 2007

S15·E111 Core

Sandra Bullock, Andy Richter, Evanescence

Mar 13, 2007

S15·E112 Core

Minnie Driver, Bailee Madison, Finger Eleven

Mar 14, 2007

S15·E113 Core

Dan Rather, bizarre food expert Andrew Zimmern, Lloyd

Mar 15, 2007

S15·E114 Core

Terry Bradshaw, Mary Lynn Rajskub, Musiq Soulchild

Mar 16, 2007

S15·E115 Core

Terrence Howard, Bruce Fine, the cast of "Jersey Boys"

Mar 19, 2007

S15·E116 Core

David Spade, Richard Engel, Hinder

Mar 20, 2007

S15·E117 Core

Roseanne Barr, Heather Mills, James Morrison

Mar 21, 2007

S15·E118 Core

Will Ferrell, Sen. Joseph Biden, Paolo Nutini

Mar 22, 2007

S15·E119 Core

Nick Nolte, bug expert Rudd Kleinpaste, Guster

Mar 23, 2007

S15·E120 Core

Quentin Tarantino, Pete Rose, Mika

Mar 26, 2007

S15·E121 Core

Jeff Foxworthy, Charlie Engle, Kevin Lin & Ray Zahab, Dierks Bentley

Mar 27, 2007

S15·E122 Core

Hilary Swank, Carlos Mencia, Gym Class Heroes

Mar 28, 2007

S15·E123 Core

Campbell Brown, Will Arnett, Dave Koz feat. Johnny Mathis

Mar 29, 2007

S15·E124 Core

Amy Poehler, Ricky Schroder, Ozomatli

Mar 30, 2007

S15·E125 Core

Kurt Russell, Shia LaBeouf, Hilary Duff

Apr 2, 2007

S15·E126 Core

Gerard Butler, Tim McGraw

Apr 3, 2007

S15·E127 Core

Jennifer Love Hewitt, Brandi Carlile

Apr 4, 2007

S15·E128 Core

Craig T. Nelson, Molly Shannon, Sick Puppies

Apr 5, 2007

S15·E129 Core

Jeremy Piven, Jenna Fischer, John Legend

Apr 6, 2007

Jeremy Piven; Jenna Fischer; John Legend.

S15·E130 Core

Anthony Hopkins, Rose McGowan, Good Charlotte

Apr 9, 2007

Anthony Hopkins; Rose McGowan (Grindhouse); Good Charlotte performs a song from their new album, Good Morning Revival; Headlines.

S15·E131 Core

Jamie Lee Curtis, Jonathan Rhys-Meyers, Patty Griffin

Apr 10, 2007

S15·E132 Core

Wanda Sykes, Jesse James, Rickie Lee Jones

Apr 11, 2007

S15·E133 Core

Julia Louis-Dreyfus, Rep. Nancy Pelosi, Relient K

Apr 12, 2007

S15·E134 Core

Rainn Wilson, Orny Adams, The Shins

Apr 13, 2007

S15·E135 Core

Luke Wilson, Alexandra Wentworth, Lily Allen

Apr 16, 2007

S15·E136 Core

Tim Russert, Eddie Izzard, Three Days Grace

Apr 17, 2007

S15·E137 Core

Tobey Maguire, Tori Spelling, Wicked

Apr 18, 2007

S15·E138 Core

Jack Black, Sanjaya, OK Go

Apr 19, 2007

S15·E139 Core

Kevin Bacon, Hayden Panettiere

Apr 20, 2007

S15·E140 Core

Zach Braff, Pat Summitt, Joss Stone

Apr 23, 2007

S15·E141 Core

Bill Maher, Sig & Edgar Hansen, Amy Winehouse

Apr 24, 2007

S15·E142 Core

Leah Remini, Adam Brody, Mavis Staples

Apr 25, 2007

Leah Remini (The King of Queens); Adam Brody (In the Land of Women); Mavis Staples performs a song from her cd We'll Never Turn Back

S15·E143 Core

S15·E166 Core

S15·E177 Core

S15·E219 Core