7. John Travolta
John Travolta made his 20th Oprah Show appearance in September 2010 when he danced Oprah onto the stage for her farewell season premiere...and helped surprise 302 Ultimate Viewers with a trip to Australia!
Look back at some of our favorite John Travolta moments
Over the years, this actor and humanitarian has also shown heart. From his touching toast at Oprah's 50th birthday party to his Hurricane Katrina relief efforts, John never let Oprah and her viewers down.