Dr. Phil McGraw

"Dr. Phil" Host, NY Times Bestselling Author, Psychologist

Jim Parsons

Emmy-nominated and Golden Globe-winning actor; best known for role as Sheldon Cooper on the CBS sitcom "The Big Bang Theory"

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"

Dana Brunetti

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

Jason Mraz

Singer-Songwriter Known for "I Won't Give Up," "Lucky" & "I'm Yours"

John Malkovich

Oscar-Nominated Actor, Producer, Director and Fashion Designer

Ryan Seacrest

Radio Personality, TV Host & Producer Best Known for "American Idol" and "On Air with Ryan Seacrest"

Beth Ditto

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

Ed Sheeran

English Singer-Songwriter Known for "Thinking Out Loud" & "Shape of You"

Criss Angel

Master Magician and Illusionist, Star of "Criss Angel Mindfreak" on A&E Network

Bob Dylan

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

Pentatonix

Grammy Award-Winning Vocal Sensations & Winners of Season 3 of NBC’s 'The Sing-Off'

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

James Corden

English Actor, Comedian & Host of CBS's "The Late Late Show With James Corden"

Paul Giamatti

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

Paul Giamatti | Full Q&A | Oxford Union

Scarlett Johansson

Award-Winning Actress & Singer Known for Portraying the Black Widow in the Marvel Cinematic Universe