Haskell
A purely functional programming language, mentioned as an example of an initial implementation language for a compiler that can reach self-hosting.
Common Themes
Videos Mentioning Haskell

Full Length Episode | #176 | February 24, 2022
Cal Newport
A programming language mentioned by caller Greg as an example of a topic he has a deep interest in, contributing to his information overload.

George Hotz: Hacking the Simulation & Learning to Drive with Neural Nets | Lex Fridman Podcast #132
Lex Fridman
A purely functional programming language recommended for learning functional programming paradigms and dependent types.

George Hotz: Comma.ai, OpenPilot, and Autonomous Vehicles | Lex Fridman Podcast #31
Lex Fridman
A functional programming language George Hotz used to write a compiler during his time at Carnegie Mellon, demonstrating his diverse language exposure.

Brian Kernighan: UNIX, C, AWK, AMPL, and Go Programming | Lex Fridman Podcast #109
Lex Fridman
A functional programming language that took Brian Kernighan several weeks to use for a trivial program, and it ran slowly.

Bjarne Stroustrup: C++ | Lex Fridman Podcast #48
Lex Fridman
A functional programming language mentioned for its ability to express mathematical concepts clearly and its strict type system.

What is Bootstrapping Anyway? - Computerphile
Computerphile
A purely functional programming language, mentioned as an example of an initial implementation language for a compiler that can reach self-hosting.