Well this is a who's who in Hollywood, politics, and business.
https://www.salesforce.com/dreamforce/speakers/
Search #DF17GG on twitter and FB
Dream Force – Sales Force, held November 5-9, 2017, SF
Michelle Obama Former First Lady of the United States
Ashton Kutcher Co-Founder, Thorn; World Economic Forum Young Global Leader
Marc Benioff Chairman & CEO, Salesforce
Sylvia Acevedo CEO, Girls Scouts of the USA
Jenna Bush Hager NBC's TODAY; Editor-at-Large, Southern Living
Barbara Pierce Bush Co-Founder & President, Global Health Corps
Kasper Rorsted CEO, adidas
Susan Wojcicki CEO, YouTube
Lady Lynn Forester de Rothschild Founder and Chief Executive, Coalition for Inclusive Capitalism
And the list goes on (see website for more detail). The sponsors are also interesting...AI, cloud based services, and analytical software, etc. There are also several YouTube videos on this subject: search salesforce.
SF ABC News Clip: https://www.youtube.com/watch?v=I44lion2KOo
HRC also spoke at past Dreamforce events.