1x12 - Julia Louis-Dreyfus, Billy Crystal

September 29, 2009

1x13 - Adam Carolla, Steve Carell, Vince Gill & Emmylou Harris

September 30, 2009

1x14 - Chris Rock

October 1, 2009

1x15 - Jenna Fischer, Dan Ahdoot, Photo Booth

October 2, 2009

1x16 - Jamie Foxx, Joe Torre

October 5, 2009

1x17 - Abigail Breslin, Cindy McCain

October 6, 2009

1x18 - Wanda Sykes, Kathleen Sebelius

October 7, 2009

1x19 - Gerard Butler, Ben Harper & Jack Black

October 8, 2009

1x20 - Terry Bradshaw

October 9, 2009

1x21 - Dana Carvey

October 12, 2009

1x22 - John C. Reilly, Ben Roethlisberger

October 13, 2009

1x23 - Mikey Day, Bill Cosby

October 14, 2009

1x24 - Matt Lauer, Jeff Dunham

October 15, 2009

1x25 - Ross Mathews, Sen. John McCain

October 16, 2009

1x26 - Rod Stewart

October 19, 2009

1x27 - Martha Stewart, Ludacris

October 20, 2009

1x28 - Rainn Wilson

October 21, 2009

1x29 - Hilary Swank, Jerry Jones

October 22, 2009

1x30 - Colin Firth

October 23, 2009

1x31 - Dr. Phil McGraw

October 26, 2009

Jay's guest is Dr. Phil McGraw.

1x32 - Ewan McGregor, Tina Fey

October 27, 2009

1x33 - Chelsea Handler, Brian Williams

October 28, 2009

Comic Chelsea Handler; journalist Brian Williams.

1x34 - Paula Abdul

October 29, 2009

1x35 - John Cusack, Frank Caliendo

October 30, 2009

Actor John Cusack; comic Frank Caliendo; comic Adam Carolla.

1x36 - Mariah Carey, a performance from Cirque du Soleil's

November 2, 2009

1x37 - Katie Featherston & Micah Sloat

November 3, 2009

1x38 - Jenna Bush Hager, Laura Bush

November 4, 2009

Author Jenna Bush Hager; former first lady Laura Bush; comic Mikey Day.

1x39 - Wanda Sykes, Rachael Ray, Dan Finnerty & the Dan Band

November 5, 2009

Comic Wanda Sykes; TV personality Rachael Ray; Dan Finnerty and the Dan Band.

1x40 - Elizabeth Banks

November 6, 2009

Actress Elizabeth Banks.

1x41 - Kathy Griffin

November 9, 2009

1x42 - Howie Mandel

November 10, 2009

1x43 - Sandra Bullock

November 11, 2009

Actress Sandra Bullock; comic Mikey Day.

1x44 - Penelope Cruz, Dolly Parton

November 12, 2009

Actress Penélope Cruz; singer Dolly Parton.

1x45 - Terrence Howard, Terry Bradshaw

November 13, 2009

1x46 - Taylor Lautner, Heather Locklear

November 16, 2009

1x47 - The Biggest Loser Rebecca Meyer, Kevin Nealon, Tyra Banks

November 17, 2009

1x48 - Larry the Cable Guy, Mikey Day

November 18, 2009

Comic Larry the Cable Guy; correspondent Mikey Day.

1x49 - Dakota Fanning, Kate Flannery, Jeff Dunham, Mikey Day

November 19, 2009

1x50 - Kellan Lutz, Ed Begley Jr.

November 20, 2009

1x51 - Gov. Arnold Schwarzenegger, Lady Gaga

November 23, 2009

Gov. Arnold Schwarzenegger (R-Calif.); Lady Gaga performs.

1x52 - Charles Barkley, The Biggest Loser contestant Allen Smith

November 24, 2009

1x53 - Paula Patton

November 25, 2009

1x54 - Megan Fox

November 26, 2009

Actress Megan Fox.

1x55 - Bill Maher

November 30, 2009

Features host of Real Time with Bill Maher and his 'Green Car Challenge', 'Ten @ Ten' segment with Jennifer Lopez, Adam Corrolla with 'Kackass of the Month', and 'Headlines' segments.

1x56 - John Travolta, Kim Kardashian

December 2, 2009

1x57 - Morgan Freeman, Maxwell, Nick Thune

December 3, 2009

1x58 - Kelsey Grammer, Taylor Swift

December 4, 2009

Actor Kelsey Grammer; musician Taylor Swift.

1x59 - Susan Sarandon, Andrea Bocelli with the Muppets

December 7, 2009

1x60 - Gabourey Sidibe, Winner of The Biggest Loser Danny Cahill

December 8, 2009

Actress Gabourey Sidibe; Ross Matthews talks to the winner of "The Biggest Loser."

1x61 - Quentin Tarantino, Drew Brees

December 9, 2009

Director Quentin Tarantino; professional football player Drew Brees.

1x63 - Gordon Ramsay

December 11, 2009

Chef Gordon Ramsay; musician Brad Paisley.

1x64 - Anna Kendrick, Tim McGraw

December 14, 2009

Actress Anna Kendrick; director James Cameron.

1x65 - Christina Applegate, Nick Lachey

December 15, 2009

1x66 - Sigourney Weaver, John Mayer

December 16, 2009

Actress Anna Kendrick; director James Cameron.

1x67 - Sam Worthington, Mary J. Blige

December 17, 2009

Actor Sam Worthington; Mary J. Blige performs.

1x68 - Glenn Beck, Kate Gosselin

December 18, 2009

TV show host Glenn Beck; TV personality Kate Gosselin.

1x69 - Jeff Bridges, Adam Lambert

December 21, 2009

1x70 - Dane Cook

December 22, 2009

1x71 - Julie Scardina, African Children's Choir

December 23, 2009

1x72 - Tim Allen

January 4, 2010

Actor Tim Allen; TV personality Adam Carolla.

1x73 - Kim Kardashian, Jillian Michaels, Guy Fieri

January 5, 2010

TV personality Kim Kardashian; TV personality Jillian Michaels.

1x74 - Hugh Jackman, Katie Couric

January 6, 2010

Actor Hugh Jackman; journalist Katie Couric.

1x75 - Denzel Washington

January 7, 2010

Actor Denzel Washington; comic Mikey Day.

1x76 - Brian Williams

January 8, 2010

Journalist Brian Williams; correspondents Ross Matthews and Mikey Day.

1x77 - Bill Cosby

January 11, 2010

1x78 - Sandra Bullock

January 12, 2010

Sandra Bullock, Anderson Cooper

1x79 - Heidi Klum

January 13, 2010

Heidi Klum, Kourtney Kardashian

1x80 - Dwayne Johnson

January 14, 2010

Dwayne Johnson, Jimmy Kimmel

1x81 - Julianne Moore

January 15, 2010

Julianne Moore, Ricky Gervais

1x82 - Emily Blunt

January 18, 2010

1x83 - Chelsea Handler

January 19, 2010

TV show host Chelsea Handler; former professional basketball player Michael Jordan.

1x84 - James Cameron

January 20, 2010

Director James Cameron; actress Selena Gomez.

1x85 - Billy Crystal

January 21, 2010

Actor Billy Crystal; actress Zoe Saldana.

1x86 - Mark Harmon

January 25, 2010

Actor Mark Harmon and Alonzo Bodden

1x87 - Mel Gibson

January 26, 2010

Actor Mel Gibson.

1x88 - Bill Paxton

January 28, 2010

Actor Bill Paxton, Sen. Scott Brown (R-Mass.).

1x89 - Howie Mandel

January 29, 2010

TV show host Howie Mandel.

1x90 - Jessica Alba

February 1, 2010

Actress Jessica Alba; Olympian John Shuster.

1x91 - Jessica Biel

February 3, 2010

Actress Jessica Biel; TV host Jimmy Fallon.

1x92 - Wanda Sykes

February 4, 2010

TV host Wanda Sykes; Olympic figure skater Evan Lysacek.

1x93 - Bill Maher, Gretchen Bleiler

February 5, 2010

1x94 - Emma Roberts, Charles Barkley

February 8, 2010

1x95 - Series Finale: Ashton Kutcher, Bob Costas, Gabourey Sidibe

February 9, 2010