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

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

Actress Rebecca Romijn (``Eastwick'').

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

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

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

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

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.

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

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.

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

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

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

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

Actress Pamela Anderson discusses her new fragrance; young inventors.

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.

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

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

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

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

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.

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

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

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

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

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.

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

Actress Sandra Bullock ("The Blind Side").

Lady Gaga performs; beauty guru Kym Douglas.

Adam Lambert performs; model Marisa Miller.

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

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

Actor Tobey Maguire; actress Minnie Driver.

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

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

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

Actor Steve Harvey; actress Mindy Kaling.

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

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

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

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

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

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

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

Actress Queen Latifah; exercise guru Richard Simmons.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

"American Idol" judge Randy Jackson.

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

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

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

Comic Jimmy Kimmel.

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

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

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!

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.

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.