Sharna Burgess

Professional Dancer on "Dancing With the Stars"

Pink

Singer-Songwriter, Actress, Philanthropist & Environmental Activist

Cheryl Burke

Professional Ballroom Dancer, Model, TV Host, Known for "Dancing with the Stars"

Emmanuelle Chriqui

Actress Known for "Entourage;" Social Advocate for Colon Cancer, Environmental Issues & Human Rights in Congo

Alicia Silverstone

Actress & Animal Rights Activist

Jake Gyllenhaal

Academy Award-Nominated & BAFTA Award-winning Actor; Environmental Activist

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Laurie David

Producer, Activist Author,The Family Dinner: Great Ways To Connect With Your Kids One Meal At A Time

Anna Trebunskaya

Professional Ballroom and Latin dancer, "Dancing with the Stars" Personality

Bill Nye

"The Science Guy"; Science Communicator, TV Presenter & Mechanical Engineer; Climate Change Activist

Mark Ballas

Dancing with the Stars Champion & Mental Health Activist

Patricia Arquette

Academy Award-Winning Actress, Activist, Humanitarian & Author

Ani Difranco

Folk/Punk Icon & Founder of Righteous Babe

Peta Murgatroyd

Professional Dancer on "Dancing with the Stars"

James Franco

Actor and Filmmaker; Known for "Oz the Great and Powerful" and "Spider-Man"

Jon Stewart

Talk Show Host, Comedian & Producer

Jon Stewart will return to ‘The Daily Show’ as host — just on Mondays

Natalie Portman

Award-Winning Actress Known for "Black Swan," "V for Vendetta" & Playing Padmé Amidala in the Star Wars Prequel Trilogy

Natalie Portman on self-confidence and performing from an early ...

Derek Hough

Dancer, NYT Bestselling Author, Emmy Award Winner for Outstanding Choreography & Six-Time Champion of ABC's "Dancing with the Stars"

Fran Drescher

National President of the Screen Actors Guild – American Federation of Television and Radio Artists (SAG-AFTRA) & Actress, Cancer Survivor and Outspoken Healthcare Advocate

Being Wendy

Witney Carson

Emmy-Nominated Professional Dancer from "Dancing with the Stars" and "So You Think You Can Dance"

Sophia Bush

Actress, Humanitarian & Author

Emmy Rossum

Actress Known for Showtime's "Shameless" & Singer-Songwriter

Mayim Bialik

Neuroscientist, Mental Health Advocate & Actress Known for "The Big Bang Theory"

Lisa Loeb

Grammy-Nominated Singer & Songwriter

Woody Allen

Legendary Director, Screenwriter & Actor

Twyla Tharp

Choreographer & Creativity Cultivator

Jeffrey Tambor

Emmy Award-Winning Actor of "Arrested Development," "The Hangover" & "Transparent"

David Suzuki

Environmentalist & Scientist; Co-Founder of the David Suzuki Foundation

Kelly Osbourne

Fashion Designer, Singer & Actress; Former Contributor to E!'s "Fashion Police"; Daughter of Ozzy and Sharon Osbourne

Alyssa Milano

Actress, Author, Philanthropist & Founder of Touch by Alyssa Milano; Known for "Charmed" and "Who's the Boss"