Ep 1

Jerry Seinfeld, Jay-Z with Rihanna & Kanye West

Ep 2

Michael Moore, Tom Cruise, Cameron Diaz

Ep 3

Robin Williams, Miley Cyrus

Ep 4

Halle Berry, Bruce Hornsby with Eric Clapton

Ep 5

Drew Barrymore, Mel Gibson

Ep 6

Jennifer Garner, Barney Frank, Headlines

Ep 7

Pee-Wee Herman, Amy Poehler, 99 Cent Store

Ep 8

Vince Vaughn, Michaels vs. Costas

Ep 9

Rush Limbaugh, Smokey Robinson with Joss Stone

Ep 10

Hugh Laurie, LeBron James

Ep 11

Bill Maher, Brad Paisley & Sheryl Crow

Ep 12

Julia Louis-Dreyfus, Billy Crystal

Ep 13

Adam Carolla, Steve Carell, Vince Gill & Emmylou Harris

Ep 14

Chris Rock

Ep 15

Jenna Fischer, Dan Ahdoot, Photo Booth

Ep 16

Jamie Foxx, Joe Torre

Ep 17

Abigail Breslin, Cindy McCain

Ep 18

Wanda Sykes, Kathleen Sebelius

Ep 19

Gerard Butler, Ben Harper & Jack Black

Ep 20

Terry Bradshaw

Ep 21

Dana Carvey

Ep 22

John C. Reilly, Ben Roethlisberger

Ep 23

Mikey Day, Bill Cosby

Ep 24

Matt Lauer, Jeff Dunham

Ep 25

Ross Mathews, Sen. John McCain

Ep 26

Rod Stewart

Ep 27

Martha Stewart, Ludacris

Ep 28

Rainn Wilson

Ep 29

Hilary Swank, Jerry Jones

Ep 30

Colin Firth

Ep 31

Dr. Phil McGraw

Ep 32

Ewan McGregor, Tina Fey

Ep 33

Chelsea Handler, Brian Williams

Ep 34

Paula Abdul

Ep 35

John Cusack, Frank Caliendo

Ep 36

Mariah Carey, a performance from Cirque du Soleil's

Ep 37

Katie Featherston & Micah Sloat

Ep 38

Jenna Bush Hager, Laura Bush

Ep 39

Wanda Sykes, Rachael Ray, Dan Finnerty & the Dan Band

Ep 40

Elizabeth Banks

Ep 41

Kathy Griffin

Ep 42

Howie Mandel

Ep 43

Sandra Bullock

Ep 44

Penelope Cruz, Dolly Parton

Ep 45

Terrence Howard, Terry Bradshaw

Ep 46

Taylor Lautner, Heather Locklear

Ep 47

The Biggest Loser Rebecca Meyer, Kevin Nealon, Tyra Banks

Ep 48

Larry the Cable Guy, Mikey Day

Ep 49

Dakota Fanning, Kate Flannery, Jeff Dunham, Mikey Day

Ep 50

Kellan Lutz, Ed Begley Jr.

Ep 51

Gov. Arnold Schwarzenegger, Lady Gaga

Ep 52

Charles Barkley, The Biggest Loser contestant Allen Smith

Ep 53

Paula Patton

Ep 54

Megan Fox

Ep 55

Bill Maher

Ep 56

John Travolta, Kim Kardashian

Ep 57

Morgan Freeman, Maxwell, Nick Thune

Ep 58

Kelsey Grammer, Taylor Swift

Ep 59

Susan Sarandon, Andrea Bocelli with the Muppets

Ep 60

Gabourey Sidibe, Winner of The Biggest Loser Danny Cahill

Ep 61

Quentin Tarantino, Drew Brees

Ep 62

Matt Damon, Barry Manilow

Ep 63

Gordon Ramsay

Ep 64

Anna Kendrick, Tim McGraw

Ep 65

Christina Applegate, Nick Lachey

Ep 66

Sigourney Weaver, John Mayer

Ep 67

Sam Worthington, Mary J. Blige

Ep 68

Glenn Beck, Kate Gosselin

Ep 69

Jeff Bridges, Adam Lambert

Ep 70

Dane Cook

Ep 71

Julie Scardina, African Children's Choir

Ep 72

Tim Allen

Ep 73

Kim Kardashian, Jillian Michaels, Guy Fieri

Ep 74

Hugh Jackman, Katie Couric

Ep 75

Denzel Washington

Ep 76

Brian Williams

Ep 77

Bill Cosby

Ep 78

Sandra Bullock

Ep 79

Heidi Klum

Ep 80

Dwayne Johnson

Ep 81

Julianne Moore

Ep 82

Emily Blunt

Ep 83

Chelsea Handler

Ep 84

James Cameron

Ep 85

Billy Crystal

Ep 86

Mark Harmon

Ep 87

Mel Gibson

Ep 88

Bill Paxton

Ep 89

Howie Mandel

Ep 90

Jessica Alba

Ep 91

Jessica Biel

Ep 92

Wanda Sykes

Ep 93

Bill Maher, Gretchen Bleiler

Ep 94

Emma Roberts, Charles Barkley

Ep 95

Series Finale: Ashton Kutcher, Bob Costas, Gabourey Sidibe