Sussman and Rich Hickey are two people whose talks I never stop enjoying.
But apart from that, his enthusiasm can even make the mseemingly most boring topic interesting.
I'd personally start either at "the story of Haskell" Escape from the Ivory Tower https://youtu.be/cOqxiS-WN1w?si=1iXpGE7cJZa4tbbJ Or something more recent, about Epic's Verse https://youtu.be/OJv8rFap0Nw?si=OE2mUllQfLmV29Bk
Totally, his ever-fresh, ever-genuine excitement with all this stuff is so contagious (for the duration, and then some =)