Sarah Ferguson

The Duchess of York, Philanthropist, Author and Advocate

Fred Armisen

Actor, Writer, Producer, Director, Musician and Comedian; Known for "Portlandia"

Ruby Rose

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

David Karp

Founder of Tumblr

David Spade

Actor & Comedian; Known For His Roles in "Joe Dirt" and "Rules of Engagement"

Molly Shannon

Comedian, Former Cast Member on SNL & Actress Known for "Other People"

Walk The Moon

Indie Rock Band Known for Songs Like "Shut Up and Dance" and "Tightrope"

Marcus Lemonis

Serial Entrepreneur, Investor and Leadership Expert; Chairman and CEO of Camping World; Star of CNBC 'The Profit', 'Streets of Dreams' and HGTV's 'The Renovator'; Philanthropist and Founder of The Lemon-AID Foundation

Dana Brunetti

Producer Known For Works Like "The Social Network," "House of Cards" and the Upcoming "50 Shades of Grey"

Jim Caviezel

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

Michael Eisner

Former CEO of The Walt Disney Company & Former President of Paramount Pictures, Founder of The Tornante Company

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Werner Vogels

Vice-President & Chief Technology Officer at Amazon.com

Ken Howery

Co-founder and managing partner at Founders Fund PayPal

Chris Janson

Country Music Singer-Songwriter Known for "Fix A Drink" & "Drunk Girl"

Beth Ditto

Indie Rocker, Known for LBGT Activism and Single "I Wrote the Book"

All American Rejects

American Rock Band; Known for the Hit Songs "Gives You Hell" and "Dirty Little Secret"

Danielle Brooks

TV, Film & Broadway Actress Known for "Orange is the New Black," "Peacemaker" & "The Color Purple"

Danielle Brooks On “The Piano Lesson” & Viral “The Color Purple” Callback

Mandy Patinkin

Actor Best Known for "Homeland," "Criminal Minds" and "The Princess Bride"

Diane Keaton

Academy Award-Winning Actress & Author

Paul Giamatti

Actor; Appeared in "Sideways" and "The Illusionist"

Paul Giamatti | Full Q&A | Oxford Union