10x1 - Pink, Patrick Dempsey, Gabrielle Douglas, McKayla Maroney, Kyla Ross

September 10, 2012

10x2 - Britney Spears, Simon Cowell

September 11, 2012

10x3 - Dave Matthews Band, Allison Janney, Reese Witherspoon

September 12, 2012

10x4 - Katy Perry, Little Big Town

September 13, 2012

10x6 - Bethenny Frankel, Kellie Pickler, the top four from "So You Think You Can Dance"

September 17, 2012

10x7 - Clint Eastwood, Pattie Mallette, Carly Rae Jepsen

September 18, 2012

10x8 - Michael J. Fox, L.A. Reid, PSY

September 19, 2012

10x9 - Amy Poehler, Ricky Gervais

September 20, 2012

10x10 - Dennis Quaid, Jenna Dewan-Tatum

September 21, 2012

10x11 - Viola Davis, Pamela Anderson

September 24, 2012

10x12 - Zooey Deschanel, Maggie Elizabeth Jones, No Doubt

September 25, 2012

10x13 - Joseph Gordon-Levitt, Kerry Washington, No Doubt

September 26, 2012

10x14 - Jennifer Garner, Dwight David Howard, Green Day

September 27, 2012

10x15 - Selena Gomez, Kobe Bryant, the Killers

September 28, 2012

10x16 - Liam Neeson, Gilles Marini & Peta Murgatroyd, Cher Lloyd

October 1, 2012

10x17 - Matchbox Twenty

October 2, 2012

10x18 - Eric Dane, Mike "The Situation" Sorrentino, Paul "Pauly D" DelVecchio, Ronnie Ortiz-Magro, Vinny Guadagnino, OneRepublic

October 3, 2012

10x19 - Zac Efron, Rebel Wilson, Ed Sheeran

October 4, 2012

10x20 - Winona Ryder, Cheryl Hines

October 5, 2012

10x21 - Colin Farrell

October 8, 2012

10x22 - Matthew Perry, Justin Bartha

October 9, 2012

10x23 - Eric Stonestreet, Rachel Maddow, Joshua Radin

October 10, 2012

10x24 - Octavia Spencer

October 11, 2012

10x25 - Kate Walsh, Mike Epps, Anthony Robles

October 12, 2012

10x26 - Joel McHale

October 15, 2012

10x27 - Emma Watson, Kym Douglas, D.L. Hughley, the Wallflowers

October 16, 2012

10x28 - Matthew Fox, Ellie Goulding

October 17, 2012

10x29 - Nicole Richie, Nina Conti

October 18, 2012

10x30 - Jessica Lange, Beth Behrs, Hunter Hayes

October 22, 2012

10x31 - Portia De Rossi, Jerry O'Connell, LL Cool J, Victoria Jackson & Ali Guthy

October 23, 2012

10x32 - Helen Hunt

October 24, 2012

10x33 - Taylor Swift

October 25, 2012

10x34 - Halle Berry

October 26, 2012

10x35 - Madonna

October 29, 2012

10x36 - Steve Harvey, Macklemore & Ryan Lewis

October 30, 2012

10x37 - Jane Lynch

October 31, 2012

10x38 - Emmitt Smith, Cheryl Burke

November 1, 2012

10x39 - Denzel Washington, Jenna Fischer, Luke Bryan

November 2, 2012

10x40 - Julie Bowen, Peter Facinelli, Elizabeth Reaser

November 5, 2012

10x41 - Model Heidi Klum; actresses Nikki Reed and Mackenzie Foy

November 6, 2012

10x42 - Actor Russell Brand; reality star Bethenny Frankel

November 7, 2012

10x43 - Actress Miley Cyrus; actors Maggie Grace and Jackson Rathbone

November 8, 2012

10x44 - Actors Robert Pattinson and Taylor Lautner; actress Kirstie Alley

November 9, 2012

Actors Robert Pattinson and Taylor Lautner; actress Kirstie Alley is an episode from the TV show The Ellen DeGeneres Show which aired on 9 November 2012.

10x45 - Adam Levine, Jennifer Hudson, Maroon 5

November 12, 2012

10x46 - Actor Andrew Garfield; reality-TV stars Alison Eastwood and Donald Schultz; Ne-Yo performs.

November 13, 2012

10x47 - Singer Rihanna; Blue Man Group performs.

November 14, 2012

10x48 - Actress Keira Knightley; One Direction performs at an outdoor concert.

November 15, 2012

10x49 - Actress Vanessa Williams; Jason Aldean performs.

November 16, 2012

10x50 - Alyson Hannigan

November 19, 2012

10x51 - Actor Jesse Tyler Ferguson; an interview and performance by Kelly Clarkson

November 20, 2012

10x52 - Actress Jennifer Lawrence.

November 21, 2012

10x53 - Actor Ray Romano; dancer Stephen ''tWitch'' Boss; Cirque du Soleil's Kiriki act perform.

November 26, 2012

10x54 - Ellen Pompeo, Jason Sudeikis, Miguel

November 27, 2012

10x55 - Khloe Kardashian, Damian Lewis, Jane Lynch

November 28, 2012