Jeff Probst

Emmy Award-Winning Host of "Survivor"

Steven Levitt

Economist, NY Times Bestselling Author of "Freakonomics," "SuperFreakonomics" & "Think Like a Freak"

Dr. Laura Berman

Sex Educator, Therapist & Researcher

Laila Ali

Undefeated Four-Time World Champion Boxer & Lifestyle Expert; Heart Disease Awareness Advocate

Marg Helgenberger

Actress & Breast Cancer Research Advocate

Cat Cora

World-Renowned Chef, Author, Restaurateur, Contributing Editor, Television Host, Actress, Avid Philanthropist, Health and Fitness Expert & Lifestyle Entrepreneur

Daymond John

"Shark Tank" Investor; Founder & CEO of FUBU; Presidential Ambassador for Global Entrepreneurship

Bill Nye

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

Bill Nye Teaches Science and Problem-Solving | Official Trailer

Jason Alexander

Star of Seinfeld

Gwyneth Paltrow

Actress, Entrepreneur, Founder & CEO of Goop

Maria Bartiromo

Global Markets Editor, FOX Business Network

Bill Maher

Political Satirist & Host of HBO's "Real Time"

Martin Short

Iconic Comedian, Actor & Writer

Bryant Gumbel

Emmy Award-Winning Journalist, Host of "Real Sports with Bryant Gumbel" on HBO

Jay Pharoah

Actor, Stand-Up Comedian & Impressionist; Former Saturday Night Live Cast Member

'Think Tank' Ep. 2: Jay Pharoah & Simmi Singh Meme Shaq O'Neal

Victoria Rowell

Actress, Producer, Director, Writer, American Ballet Theatre Alum & Founder of Rowell Foster Children's Positive Plan (RFCPP)

The Women Who Raised Me: A Memoir

Rosie Perez

Actress, Choreographer, Activist & Former Co-Host of "The View"

Seth Godin

Business & Marketing Expert & New York Times Bestselling Author of "Purple Cow," "Linchpin," & "Tribes"

John Green

New York Times Bestselling Author, Known for "The Fault in Our Stars," "Looking for Alaska" & "Paper Towns"

Iyanla Vanzant

Host & Executive Producer of "Iyanla Fix My Life"; #1 New York Times Best-Selling Author & Spiritual Life Coach