The first time I watched Simple Made Easy, I didn't like it, even though I'd written quite a few situated programs in my day. A year later, I'd learned Clojure and re-watched it, and it all made so much sense. It's now one of my favorite tech talks.
Gerry Sussman talk is awesome and reflects very well the currently state of computer programming. It's a shame. The worse part: there is people around us with a lot of pride ABOUT DON'T KNOWING TO COMPUTE BUT STILL DOING [INNEFICIENT] THINGS. (sorry for the caps, good bye)
Zebras All the Way Down: Bryan Cantrill - https://www.youtube.com/watch?v=fE2KDzZaxvE
Jonathan Blow on Deep Work: Jonathan Blow - https://www.youtube.com/watch?v=4Ej_3NKA3pk
Simple Made Easy: Rich Hickey - https://www.infoq.com/presentations/Simple-Made-Easy
Effective Programs - 10 Years of Clojure: Rich Hickey - https://www.youtube.com/watch?v=2V1FtfBDsLU&t=845s
The Last Thing D Needs: Scott Meyers - https://www.youtube.com/watch?v=KAWA1DuvCnQ