Bebe Neuwirth

Actress, Musician and Dancer; Known for "Cheers" and "Jumanji"

Jim Belushi

Actor, Comedian & Musician

Ann Curry

Anchor of "Chasing the Cure;" Former NBC Today Anchor, National & International Correspondent; Former Dateline Anchor

Cameron Diaz

Actress, Model & Author of "The Body Book;" Best Known for "Bad Teacher" & "The Counselor"

Quentin Tarantino

Award-Winning Screenwriter & Director; Best Known for "Pulp Fiction", "Django Unchained", and "Once Upon a Time in Hollywood"

Dexter Holland

Lead Vocalist & Founding Member of the Punk Rock Band The Offspring; PhD in Molecular Biology

Dr. John Boockvar

Vice Chair of the Department of Neurosurgery at Lenox Hill Hospital & Director of the Department’s Brain Tumor Center; Featured on Netflix's "Lenox Hill"

Makaziwe Mandela

Daughter of Nelson Mandela & Director of the House of Mandela Family Foundation

Gwen Stefani

Three-Time Grammy Award Winner, Singer-Songwriter, Coach on "The Voice," Fashion Designer & Entrepreneur

Clint Dempsey

Retired Professional Soccer Player

Jennie Garth

Television Actress & Advocate for the American Heart Association

Al Roker

Co-Host NBC Today Show Media Entrepreneur, Author

Shania Twain

Grammy-Winning Canadian Singer; Best-Selling Female Country Pop Artist

Kevin James

Comedian & Actor, Known for "The King of Queens" & "Grown Ups"

Kevin James Reacts to His Viral The King of Queens Meme

Denise Richards

Actress, Former Fashion Model & Reality Star on Bravo's "The Real Housewives of Beverly Hills"

Bob Dylan

Legendary Singer-Songwriter and Entertainer; Known for "The Times They Are a-Changin'"

Zosia Mamet

Actress Known for Her Role in HBO's "Girls"

Dr. Travis Stork

Bestselling Author, Emergency Medicine Physician & TV Personality Known for "The Doctors"

Dustin Hoffman

American Actor with a Career in Film, Television, and Theatre Since 1960

Alan Alda

Actor; Writer; Science Advocate; Director