7x1 - Mariah Carey

September 6, 2009

7x4 - Kate Beckinsale

September 10, 2009

7x5 - Katherine Heigl

September 11, 2009

7x6 - Sharon Osbourne

September 13, 2009

7x7 - Queen Latifah

September 14, 2009

7x8 - Jennifer Aniston

September 15, 2009

7x9 - Ted Danson

September 17, 2009

7x10 - Neil Patrick Harris

September 18, 2009

7x11 - Jennifer Love Hewitt

September 21, 2009

7x12 - Jennifer Garner

September 22, 2009

7x13 - Courteney Cox Arquette

September 23, 2009

7x14 - Christina Applegate and Dave Annable

September 24, 2009

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

7x15 - Patricia Arquette

September 25, 2009

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

7x16 - Rebecca Romijn

September 28, 2009

Actress Rebecca Romijn (``Eastwick'').

7x17 - Drew Barrymore

September 29, 2009

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

7x18 - Heidi Klum

September 30, 2009

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

7x19 - Kate Walsh

October 1, 2009

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

7x20 - Felicity Huffman

October 2, 2009

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

7x21 - Julia Louis-Dreyfus

October 5, 2009

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.

7x22 - Rob Lowe

October 6, 2009

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

7x23 - Ellen Page

October 7, 2009

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.

7x24 - Clive Owen

October 8, 2009

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

7x25 - Jason Bateman

October 9, 2009

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

7x26 - Vince Vaughn

October 12, 2009

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

7x27 - Jimmy Smits

October 13, 2009

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

7x28 - Alison Sweeney

October 14, 2009

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

7x29 - Taye Diggs

October 15, 2009

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

7x30 - Marcia Cross

October 16, 2009

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

7x31 - Hayden Panettiere

October 19, 2009

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

7x32 - Lauren Graham

October 20, 2009

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

7x33 - Mario Lopez

October 21, 2009

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

7x34 - David Spade

October 22, 2009

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.

7x35 - Alyson Hannigan

October 23, 2009

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

7x36 - Hilary Swank

October 26, 2009

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

7x37 - Jimmy Kimmel

October 27, 2009

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

7x38 - Katie Couric

October 28, 2009

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

7x39 - Taylor Swift

October 29, 2009

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

7x40 - Halloween Show

October 30, 2009

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

7x41 - Jim Carrey

November 2, 2009

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

7x42 - Mo'Nique

November 3, 2009

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

7x43 - Mariah Carey

November 4, 2009

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

7x44 - Amy Poehler

November 5, 2009

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

7x45 - Pamela Anderson

November 6, 2009

Actress Pamela Anderson discusses her new fragrance; young inventors.

7x46 - George Lopez

November 9, 2009

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.

7x47 - Jenny McCarthy

November 10, 2009

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

7x48 - John and Ella Bleu Travolta

November 11, 2009

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

7x49 - Harry Connick Jr.

November 12, 2009

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

7x50 - Ryan Seacrest

November 13, 2009

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

7x51 - Dakota Fanning

November 16, 2009

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.

7x52 - Dwayne Johnson

November 17, 2009

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