Alyson Hannigan & Zachary Quinto

NeNe & Gregg Leakes

Lisa Vanderpump & Giggy

Busy Phillips & Al Roker

Marlon Wayons & Carla Hall

Tionne "T-Boz" Watkins & Tatyana Ali

Kenya Moore & Mercedes "MJ" Javid

Kim Richards & Tom Arnold

Sarah Paulson & Robin Thicke

Maggie Q & Padma Lakshmi

George Tekei & Drita D'Avanzo

Mike Shouhed & Kandi Burruss

Hoda Kotb & Brandi Glanville

Kristen Johnston & Luke Perry

Patti LuPone & Billy Eichner

Kimora Lee Simmons & Liam McIntyre

Asa Soltan Rahmati & Jeff Lewis

Callie Thorne & Yolanda Foster

Whoopi Goldberg

Jax Taylor, Stassi Schroeder, Scheana Marie & Tom Sandoval

Khloe Kardashian & Victor Garber

Kyle Richards & Kristen Doute

Abby Lee Miller & Carson Kressley

Rachel Dratch & Jenna Elfman

Jenny McCarthy

Josh Groban & Phaedra Parks

Nigel Barker & Taylor Armstrong

Eve & Nigella Lawson

Jillian Michaels & Melissa Rauch

Julianne Hough & Josh Duhamel

Naomi Campbell

Anderson Cooper & Wendi McLendon-Covey

Boris Kodjoe & Dana Dana Delany

Top Chef Winner & Runner-up

Seth Meyers & Gayle King

Cynthia Bailey & NeNe Leakes

Stassi Schroeder & Jax Taylor (400th episode)

Chelsea Handler & Ricky Schroder

Brad Goreski & Tate Donovan

Jennifer Love Hewitt & Jake Owen

Brooklyn Decker & Kenya Moore

Brandi Glanville

Sarah Silverman

Ian Somerhalder & Nev Schulman

Paloma Faith & Gillian Jacobs

Porsha Stewart & Jurnee Smollett-Bell

Kim Richards & Lisa Rinna

La Toya Jackson & Reza Farahan

Megan Hilty & Patti Stanger

Shirley Manson & Becca Tobin

Mariah Huq & Wendy Raquel Robinson

Kyle Richards & Dr. Venus Nicolino

Kathy Griffin

Anna Chlumsky, Christian Siriano & Christos Garkinos

Caroline Manzo & Bobby Moynihan

Kandi Burress & Quad Webb-Lunceford

Vicki Gunvalson & Jenni Pulos

Rita Wilson & Nia Vardalos

New Kids on the Block

Tabatha Coffey & Fred Armisen

Iyanla Vanzant & Julie Benz

Pete Wentz & Camille Grammer

Harvey Fierstein & Kim Zolciak

Kevin Jonas & Heather Graham

Peter Facinelli & Joe Manganiello

Vivica A Fox & Porsha Stewart

Tamra Barney & Dr V

Laura Linney & John Benjamin Hickey

Vincent Kartheiser & Gabriel Mann

Fantasia & Anthony Mackie

Kareem Abdul Jabbar & Don Cheadle

Jackie Siegal & Alexis Bellino

Carly Rae Jepsen & Kandi Burruss

Rachel Maddow & Lil Jon

Lauren Graham & Kal Penn

Dr Jackie Walters & Dr Simone Whitmore

98 Degrees

Natalie Maines & Carrie Ann Inaba

Sheree Whitfield & Matthew Morrison

Gretchen Rossi & Willie Geist

Wendy Williams

Amy Schumer & Tony Goldwyn

Kari Wells & Toya Bush-Harris

Heather Dubrow & Jamie Lynn Sigler

Ray J & Vinny Guadagnino

Ryan Serhant, Luis D Ortiz & Fredrik Eklund

Elisabeth Moss & Jessica Walter

Khloe Kardashian Odon & Melissa Joan Hart

Aaron Tveit & Ethan Hawke

The Wanted

Teresa Giudice