Ruby Rose

Australian Model, DJ, Actress & TV Presenter; Known for "Batwoman" & "Orange is the New Black"

Utkarsh Ambudkar

Actor; Best Known for "Pitch Perfect" & "The Mindy Project"

Ginger Zee

Chief Meteorologist for ABC News, Author & Mental Health Advocate

Chasing Helicity: Through the Storm (The Chasing Helicity Series) (Chasing Helicity Ser...

Matt McGorry

Actor Known for "Orange is the New Black" & "How to Get Away with Murder;" Feminist & Social Change Advocate

Dan Schulman

President & CEO of PayPal; Former President of American Express

Colin Egglesfield

Actor, Producer, Entrepreneur & Motivational Speaker; Founder of Shout Out! Shirts & The AgileArtist Movement; Cancer Survivor

Tracy Pollan

Emmy Award-Nominated Actress & Author, Known for "Family Ties"; Advocate for Parkinson's Disease

Michelle Gielan

Former National CBS News Anchor Turned Positive Psychology Researcher; Bestselling Author of "Broadcasting Happiness"

Glennon Doyle

Author, Activist & Founder of Together Rising

Cristina Saralegui

Journalist, Actress, Author & TV Personality; Best Known for "The Cristina Show"

Chef Lala (Laura Diaz)

Celebrity Chef & Nutritionist; Bestselling Author

Benedict Cumberbatch

English Actor Best Known for "Sherlock;" Ambassador for the Motor Neurone Disease Association

Peter Dinklage

Emmy Award-Winning Actor, Known for his Role on "Game of Thrones"

Chrissy Teigen

Model, Author & Television Personality

Clark Gregg

Actor Known For "The New Adventures of Old Christine" & "The Avengers"

Jim Caviezel

Actor; Known for "Sound of Freedom" & "The Passion of the Christ"

Zosia Mamet

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

Michael B. Jordan

Actor & Producer; Best Known for "Black Panther," "Creed," "Friday Night Lights" & "Just Mercy"

Jonathan Bush

Technology Entrepreneur; Co-Founder & Former CEO of athenahealth

Rudolph E. Tanzi

Alzheimer's Disease Researcher; Expert on the Genetics of Neurological Disease; Professor of Neurology at Harvard Medical School