Andy Cohen

Emmy Award-Winning Host & Producer of Bravo’s "Watch What Happens: Live"

Andy Cohen reacts to his infamous New Year’s Eve rant

Steve Wozniak

Co-Founder of Apple Computer, Inc.

Venus Williams

Professional Tennis Player, Four-Time Olympic Gold Medalist, Equal Pay Activist, Author & Entrepreneur

Bill Nye

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

Spike Lee

Academy Award-Winning Writer, Producer, Actor & Director; Best Known for "BlacKkKlansman" & "Malcolm X"

Ashley Judd

Actress, Activist & Humanitarian

Mitt Romney

Former Governor of Massachusetts, 2012 Republican Presidential Nominee and CEO

Diane Guerrero

Immigration Reform Activist & Actress Known for "Orange is the New Black" & "Jane The Virgin"

Monica Lewinsky

Producer, Social Activist, Contributing Editor to Vanity Fair, Expert on Cyberbullying, Women's Issues & Reinvention

Monica Lewinsky Suits Up for Reformation's New Power Voting Campaign

Reshma Saujani

Lawyer, Politician, Founder of Girls Who Code & Marshall Plan for Moms

Liz Wiseman

President of The Wiseman Group & Best-Selling Author of "Multipliers"

Sophia Bush

Actress, Humanitarian & Author

Kal Penn

Actor, Writer, Producer & Former Associate Director of the White House Office of Public Engagement

Walter Robb

Food Retail Expert & Food Access Advocate; Principal at Stonewall Robb Advisors; Former Co-CEO of Whole Foods Market

Nikki Glaser

Stand-Up Comedian & Podcast Host; Known for "Last Comic Standing" and "Inside Amy Schumer"

Amy Purdy

Former "Dancing with the Stars" Contestant & Paralympic Professional Snowboarder

Hines Ward

2-time Super Bowl Champion, Former Assistant Coach for NY Jets & Head Coach of the San Antonio Brahmas of the XFL

Giuliana and Bill Rancic

Stars of the reality TV show "Giuliana & Bill" on Style Network

Shawn Achor

Harvard Professor, Researcher, Positive Psychology Expert, Author of "The Happiness Advantage" & "Big Potential"

Daphne Oz

Emmy Award-winning Television Host, New York Times Bestselling Author, Chef & Entrepreneur