On the ADG's website one can find links to their annual Oscar panel and their on-going film society screenings' Q&As -
https://www.adg.org/?art=adg_tv_ player&FIRST=1
The WBI website has a section dedicated to videos from their various events. Those include presentations, panels and updates from their labs: http://worldbuilding.institute/videos
The giant of online talks has created a page for design, where one can view many of the world's leading experts discussing their inspiration and ideas - https://www.ted.com/topics/design
John Berger's groundbreaking series, and the book following it, are now considered classic works of art interpretation. Berger discusses the ways in which we interpret visual imagery around us, from 18th Century oil paintings to modern-day advertising. The tools he gives the viewers are valuable and timeless in their ability to see beyond the image - https://www.youtube.com/watch?v=0pDE4VX_9Kk
Alain de Botton is a well-known contemporary thinker and writer, who often contemplates the philosophy of art and design. He is witty, clever and discerning, and his examples are eclectic and drawn from both art history and our everyday life.
On Why Design Matter - https://www.youtube.com/watch?v=J6LtABooE2c
A Lecture at the Ikea Design Conference - https://www.youtube.com/watch?v=6QcTQSNTONw
On What is Art For - https://www.youtube.com/watch?v=ZVlQOytFCRI