Episode 1 - Mariah Carey

Episode 2 - David Beckham

Episode 4 - Kate Beckinsale

Episode 5 - Katherine Heigl

Episode 6 - Sharon Osbourne

Episode 7 - Queen Latifah

Episode 8 - Jennifer Aniston

Episode 9 - Ted Danson

Episode 10 - Neil Patrick Harris

Episode 11 - Jennifer Love Hewitt

Episode 12 - Jennifer Garner

Episode 13 - Courteney Cox Arquette

Episode 14 - Christina Applegate and Dave Annable

Actress Christina Applegate; actor Dave Annable (``Brothers & Sisters''); the Noisettes perform.

Episode 15 - Patricia Arquette

Actress Patricia Arquette (``Medium''); ``Dancing With the Stars'' contestants Tom DeLay and Cheryl Burke.

Episode 16 - Rebecca Romijn

Actress Rebecca Romijn (``Eastwick'').

Episode 17 - Drew Barrymore

Director Drew Barrymore (``Whip It'').

Episode 18 - Heidi Klum

Model Heidi Klum (``Project Runway''); Brad Paisley performs; chef Roberto Martin.

Episode 19 - Kate Walsh

Actress Kate Walsh (``Private Practice''); dancers Melissa Sandvig and Ade Obayomi perform.

Episode 20 - Felicity Huffman

Actress Felicity Huffman (``Desperate Housewives''); Roger Daltrey performs; animal handler Jack Hanna.

Episode 21 - Julia Louis-Dreyfus

Actress Julia Louis-Dreyfus (``The New Adventures of Old Christine''); actor Jason Schwartzman (``Bored to Death''); ``Dancing With the Stars'' contestants Melissa Joan Hart and Mark Ballas.

Episode 22 - Rob Lowe

Actor Rob Lowe (``The Invention of Lying''); actress Juliette Lewis (``Whip It''); Miranda Lambert performs.

Episode 23 - Ellen Page

Actress Ellen Page (``Whip It''); actor Kevin Nealon; Michael Franti & Spearhead perform; Horia ``Billy'' Cretan discusses saving a 4-year-old boy from a burning building.

Episode 24 - Clive Owen

Actor Clive Owen (``The Boys Are Back''); actress Joely Fisher (``'Til Death''); the Backstreet Boys perform.

Episode 25 - Jason Bateman

Actor Jason Bateman (``Couples Retreat''); author Judy Shepard (``The Meaning of Matthew''); 9-year-old singer Anna Grace performs.

Episode 26 - Vince Vaughn

Actor Vince Vaughn (``Couples Retreat''); Pete Yorn and Scarlett Johansson perform.

Episode 27 - Jimmy Smits

Actor Jimmy Smits; actor T.R. Knight (``Parade''); Daughtry performs.

Episode 28 - Alison Sweeney

TV show host Alison Sweeney (``The Biggest Loser''); the Script performs; 10-year-old twins perform a cappella.

Episode 29 - Taye Diggs

Actor Taye Diggs (``Private Practice''); chef Wolfgang Puck; dancer Shelby ``Skip'' Skipper performs.

Episode 30 - Marcia Cross

Actress Marcia Cross ("Desperate Housewives"); actor Dylan Walsh ("The Stepfather"); dancer Bryan Boyer performs.

Episode 31 - Hayden Panettiere

Actress Hayden Panettiere (``Heroes''); Angel Taylor performs; ``Dancing With the Stars'' contestants Aaron Carter and Karina Smirnoff.

Episode 32 - Lauren Graham

Actress Lauren Graham ("Parenthood"); music group One Republic; 4-year-old hip-hop dancer.

Episode 33 - Mario Lopez

Author Mario Lopez ("Mud Tacos!"); chef Roberto Martin.

Episode 34 - David Spade

Actor David Spade; actor John C. Reilly (``Cirque Du Freak: The Vampire's Assistant''); Mika performs; a 10-year-old girl raises money for a no-kill animal shelter.

Episode 35 - Alyson Hannigan

Actress Alyson Hannigan (``How I Met Your Mother''); ``Dancing With the Stars'' contestants Mya and Dmitry Chaplin.

Episode 36 - Hilary Swank

Actress Hilary Swank (``Amelia''); Jay Sean performs.

Episode 37 - Jimmy Kimmel

Talk-show host Jimmy Kimmel; author Deepak Chopra (``Reinventing the Body, Resurrecting the Soul'').

Episode 38 - Katie Couric

Journalist Katie Couric; TV personality Kate Gosselin; actress Gabourey "Gabby" Sidibe ("Precious: Based on the Novel "Push" by Sapphire").

Episode 39 - Taylor Swift

Singer Taylor Swift; Tim McGraw performs; backup dancers from ``Michael Jackson's This Is It'' perform.

Episode 40 - Halloween Show

Halloween Show: singer Kellie Pickler; singer Rick Springfield; Science Guy Steve Spangler.

Episode 41 - Jim Carrey

Actor Jim Carrey (``A Christmas Carol''); singer Faith Hill discusses her new fragrance.

Episode 42 - Mo'Nique

Actress Mo'Nique (``Precious: Based on the Novel ``Push'' by Sapphire''); ``The Biggest Loser'' castoff Abby Rike; Justin Bieber performs.

Episode 43 - Mariah Carey

Singer Mariah Carey; author Jonathan Safran Foer (``Eating Animals''); latest castoffs from ``So You Think You Can Dance.''

Episode 44 - Amy Poehler

Actress Amy Poehler (``Parks and Recreation''); actress Fran Drescher discusses her skin care line.

Episode 45 - Pamela Anderson

Actress Pamela Anderson discusses her new fragrance; young inventors.

Episode 46 - George Lopez

Talk show host George Lopez; actress Robin Wright Penn (``The Private Lives of Pippa Lee''); 7-year-old solar system enthusiast Brandt Bickford; Game Week kicks off.

Episode 47 - Jenny McCarthy

Actress Jenny McCarthy; actor Shemar Moore; Game Week continues.

Episode 48 - John and Ella Bleu Travolta

Actors John and Ella Bleu Travolta (``Old Dogs''); Game Week continues.

Episode 49 - Harry Connick Jr.

Harry Connick Jr. performs; actress Paula Patton (``Precious: Based on the Novel ``Push'' by Sapphire''); Game Week continues.

Episode 50 - Ryan Seacrest

Media personality Ryan Seacrest; the latest castoff from ``So You Think You Can Dance''; Game Week concludes.

Episode 51 - Dakota Fanning

Actress Dakota Fanning (``The Twilight Saga: New Moon''); rapper Diddy discusses his alcoholic beverage line; ``Dancing With the Stars'' contestants Joanna Krupa and Derek Hough.

Episode 52 - Dwayne Johnson

Actor Dwayne Johnson (``Planet 51''); journalist Brian Williams; 12-year-old singer Rhap Salazar performs.

Episode 53 - Carrie Underwood

Carrie Underwood performs; actor Kellan Lutz (``The Twilight Saga: New Moon'').

Episode 54 - Simon Baker

Actor Simon Baker (``The Mentalist''); Leona Lewis performs; former tennis player Andre Agassi discusses his autobiography, ``Open.''

Episode 55 - Robert Pattinson

Actor Robert Pattinson (``The Twilight Saga: New Moon''); 13-year-old violinist Justus Rivera performs.

Episode 56 - Jon Bon Jovi

Singer Jon Bon Jovi; the group Bon Jovi performs; "Dancing With the Stars" contestants Kelly Osbourne and Louis van Amstel; a 7-year-old pingpong prodigy.

Episode 57 - Penélope Cruz

Actress Penélope Cruz ("Broken Embraces"); Kris Allen performs; the latest castoffs from "So You Think You Can Dance."

Episode 58 - Sandra Bullock

Actress Sandra Bullock ("The Blind Side").

Episode 59 - Lady Gaga

Lady Gaga performs; beauty guru Kym Douglas.

Episode 60 - Adam Lambert

Adam Lambert performs; model Marisa Miller.

Episode 61 - Matt Dillon

Actor Matt Dillon (``Armored''); actress Ashley Greene (``The Twilight Saga: New Moon''); TV personality Tia Maria Torres (``Pit Bulls and Parolees'').

Episode 62 - Jennifer Lopez

Jennifer Lopez performs; a performance from Cirque du Soleil's KOOZA.

Episode 63 - Tobey Maguire

Actor Tobey Maguire; actress Minnie Driver.

Episode 64 - Zach Braff

Actor Zach Braff (``Scrubs''); Allison Iraheta performs; the latest castoffs from ``So You Think You Can Dance'').

Episode 65 - Clint Eastwood

Actor Clint Eastwood (``Invictus''); Overtone performs; 7-year-old Brandt Bickford showcases the hottest toys for the holidays.

Episode 66 - Howie Mandel

Author Howie Mandel (``Here's the Deal''); actress Marie Osmond.

Episode 67 - Steve Harvey

Actor Steve Harvey; actress Mindy Kaling.

Episode 68 - Selena Gomez

Actress Selena Gomez; Selena Gomez & The Scene perform; chef Roberto Martin.

Episode 69 - Ray Romano

Actor Ray Romano (``Men of a Certain Age''); Marie Tillman, widow of former NFL player Pat Tillman.

Episode 70 - John Mayer

John Mayer performs; a performance by the top six contestants from ``So You Think You Can Dance.''

Episode 71 - Paris Hilton

Socialite Paris Hilton discusses her new fragrance; author Lewis Blackwell (``The Life & Love of Trees'').

Episode 72 - Craig Ferguson

Author Craig Ferguson ("American on Purpose: The Improbable Adventures of an Unlikely Patriot"); Actor Zoe Saldana ("Avatar")

Episode 73 - John Krasinski

Actor John Krasinski ("It's Complicated"); Robin Thicke performs.

Episode 74 - Christian Slater

Actor Christian Slater (``The Forgotten''); Rickie Lee Jones and Ben Harper perform; the winner of ``So You Think You Can Dance.''

Episode 75 - Helen Mirren

Actress Helen Mirren (``The Last Station''); 8-year-old pianist Emily Bear; Kesha performs.

Episode 76 - Queen Latifah

Actress Queen Latifah; exercise guru Richard Simmons.

Episode 77 - Wanda Sykes

Comic Wanda Sykes; 5-year-old Kylie Kim.

Episode 78 - Jackie Chan

Singer Mary J. Blige performs; actor Jackie Chan (``The Spy Next Door''); actress Anna Kendrick (``Up in the Air'').

Episode 79 - Matthew Broderick

Actor Matthew Broderick ("Wonderful World"); Mary J. Blige performs; Jillian Michaels ("The Biggest Loser").

Episode 80 - Bette Midler

Singer Bette Midler; actor Eric Stonestreet (``Modern Family''); chef Tal Ronnen (``The Conscious Cook'').

Episode 81 - Josh Holloway

Actor Josh Holloway (``Lost''); actor Matthew Goode (``Leap Year''); Gloriana performs.

Episode 82 - Edward Norton

Producer Edward Norton (``By the People''); actor Jim Parsons (``The Big Bang Theory''); magician Shawn Farquhar performs.

Episode 83 - Mark Wahlberg

Episode 84 - Keith Urban

Keith Urban performs; Jake Pavelka (``The Bachelor''); 10-year-old twins Darius and Demetrice Gillespie perform; LMFAO performs.

Episode 85 - Jeff Bridges

Actor Jeff Bridges (``Crazy Heart''); director Tom Ford (``A Single Man''); subway hero Douglas Murphy; Matt Morris and Justin Timberlake perform.

Episode 86 - Dennis Quaid

Actor Dennis Quaid (``Legion''); actress Sofia Vergara (``Modern Family''); a castoff from ``The Bachelor.''

Episode 87 - Colin Firth

Actor Colin Firth (``A Single Man''); Drew Pinsky (``Celebrity Rehab With Dr. Drew''); Orianthi performs.

Episode 88 - Sean Hayes

Actor Sean Hayes (Broadway's "Promises, Promises"); journalist Anderson Cooper discusses the Hope for Haiti telethon; Ingrid Michaelson performs.

Episode 89 - Valerie Bertinelli

Actress Valerie Bertinelli; actor Zachary Levi ("Chuck").

Episode 90 - Ellen's birthday show

Ellen's birthday show; singer Harry Connick Jr.; actor Will Arnett ("When in Rome"); Adam Lambert performs.

Episode 91 - Jenna Elfman

Actress Jenna Elfman (``Accidentally on Purpose''); show host Chris Harrison (``The Bachelor''); Lady Antebellum performs.

Episode 92 - Mario Lopez

Show host Mario Lopez ("Extra"); Corinne Bailey Rae performs.

Episode 93 - Josh Duhamel

Actor Josh Duhamel (``When in Rome''); actor Matthew Bomer (``White Collar'').

Episode 94 - Ellen's Grammy Show

Singer Rhianna and highlights directly from the Grammy red carpet..

Episode 95 - LL Cool J

Actor LL Cool J ("NCIS: Los Angeles"); actress Jessica Capshaw ("Grey's Anatomy"); golfer Bubba Watson.

Episode 96 - Ellen Pompeo

Actress Ellen Pompeo (``Grey's Anatomy'').

Episode 97 - Heidi Klum

Model Heidi Klum discusses heart disease awareness; Olympic men's snowboarding gold medalist Shaun White; juggler Anthony Gatto performs.

Episode 98 - Super Bowl Show

Ozzy, Sharon, Jack and Kelly Osbourne discuss Ozzy's new book; chef Roberto Martin; Train performs.

Episode 99 - 1,100th Show

Actress Jessica Alba (``Valentine's Day'').

Episode 100 - Bradley Cooper

Actor Bradley Cooper ("Valentine's Day"); actress Emily Blunt ("The Wolfman").

Episode 101 - Demi Moore

Actress Demi Moore (``Happy Tears''); actor Channing Tatum (``Dear John''); Michael Bubl‚ performs.

Episode 102 - Patrick Dempsey

Actor Patrick Dempsey (``Valentine's Day''); beauty guru Kym Douglas.

Episode 103 - Valentine's Day Show

Actress Anne Hathaway (``Valentine's Day'').

Episode 104 - Eric Dane

Actor Eric Dane ("Valentine's Day"); Rihanna performs; Game Week kicks off.

Episode 105 - Mardi Gras Show

Singer Kellie Pickler; ``The Bachelor'' castoff; Sade performs; Game Week continues.

Episode 106 - Tracy Morgan

Actor Tracy Morgan ("30 Rock"); racecar driver Danica Patrick; Game Week continues.

Episode 107 - Kate Walsh

Actress Kate Walsh ("Private Practice"); Game Week continues.

Episode 108 - Game Week Finale

Reality TV star Kim Kardashian; the latest "American Idol" castoff; Game Week concludes.

Episode 109 - Randy Jackson

"American Idol" judge Randy Jackson.

Episode 110 - Ewan McGregor

Actor Ewan McGregor (``The Ghost Writer''); chef Gordon Ramsay; a Georgia woman tells her heroic story; ``American Idol'' castoff Shelby Dressel.

Episode 111 - Woody Harrelson

Actor Woody Harrelson ("The Messenger"); skier Julia Mancuso.

Episode 112 - Felicity Huffman

Actress Felicity Huffman ("Desperate Housewives"); actor Jesse Williams ("Grey's Anatomy").

Episode 113 - Jimmy Kimmel

Comic Jimmy Kimmel.

Episode 114 - David Spade

Actor David Spade; ``The Buried Life'' creators, Duncan Penn, Ben Nemtin, Dave Lingwood and Jonnie Penn; Daniel Merriweather performs.

Episode 115 - Lauren Graham

Actress Lauren Graham (``Parenthood''); skier Lindsey Vonn; Mina Tank performs.

Episode 116 - Courtney Cox

It's been a crazy season full of scandals and surprises on "The Bachelor," and Ellen has been riveted with the rest of America. This week, Jake finally made his decision between Vienna and Tenley -- was it the right one? Today the woman without the ring is visiting Ellen to spill everything -- about everyone! Then, COURTENEY COX is sure to have some fun and crazy stories -- she just returned from Jennifer Aniston's huge birthday party in Cabo San Lucas! Courteney has had a lot to celebrate recently, with her first Golden Globe nomination for her hit show "Cougar Town." She and husband David Arquette met while filming "Scream" -- and will soon get a chance to relive it when they start filming the fourth one this summer! Ellen will make sure to get an update on their beautiful daughter, Coco. It's also time for another round of Know or Go. While people are falling down, you never know if a celebrity might pop up with a big surprise for the audience!

Episode 117 - Simon Baker

Jake from "The Bachelor" has given the final rose, and today the couple is here to share all the behind-the-scenes details with Ellen! It's been one of the most scandal-filled and surprising seasons ever, and they have a lot of questions to answer! Ellen will find out all the drama, and she's making sure they answer the tough questions! While here, Jake might want to get some tips from the very sexy SIMON BAKER. He's been married for over 11 years! It must be the romance -- he said he loves an open fire with a sunset. Who wouldn't love a man like that? Being labeled the sexiest man on TV doesn't hurt either! Plus, last summer over 2 million people downloaded the #1 hit song, "Whatcha Say." It was JASON DERULO's first single, which made it clear that he was headed to the top! Now he's releasing his debut CD and is stopping by to perform his latest hit, "In My Head." And, Ellen has another group of audience members who will show off their unbelievable hidden talents today.

Episode 120 - Ed Helms, Isaiah Mustafa, Vedera

Episode 128 - Kristin Chenoweth, Jean-Christophe Novelli, the Bird and the Bee

Episode 129 - 1096

Episode 131 - Sharon Osbourne, Usher, "American Idol" castoff Paige Miles

Episode 138 - Eva Longoria Parker, Crystal Swing

Episode 139 - Kirstie Alley, Cyndi Lauper, Matthew Morrison

Episode 141 - David Duchovny, Aziz Ansari, Nikki & Rich, Erin Andrews & Maksim Chmerkoskiy

Episode 143 - Howie Mandel, Tori Spelling & Dean McDermott, Nicole Scherzinger & Derek Hough

Episode 144 - Lisa Kudrow, B.o.B. featuring Bruno Mars

Episode 146 - Wanda Sykes, Evan Lysacek & Anna Trebunskaya, Jason Castro

Episode 148 - Annette Bening, Science Guy Steve Spangler

Episode 149 - Marisa Tomei, Toni Braxton

Episode 151 - Kiefer Sutherland

Kiefer Sutherland discusses his medical emergency on the set of 24 and where the show is going. A 10-year old guitarist, Yuto Miyazawa, performs. A new edition of mystery word.

Episode 152 - Paris Hilton, Kathy Hilton, "American Idol" castoff Siobhan Magnus

Episode 159 - Julia Louis-Dreyfus, Slash & Adam Levine, Cory Monteith

Episode 163 - Queen Latifah, Justin Bieber

Episode 164 - Steve Carell, Nikki Reed, James Taylor & Carole King

Episode 165 - Robert Pattinson, Adam Lambert

Episode 166 - Antonio Banderas, Weezer

Episode 167 - Eddie Murphy, Jason Lewis, "American Idol" castoff Casey James

Episode 170 - Greyson Chance, Colin Farrell, Janelle Monae

Episode 171 - Ashton Kutcher, Chely Wright, dancers from "So You Think You Can Dance"

Episode 172 - "American Idol" winner Lee DeWyze, runner-up Crystal Bowersox