I feel that CMU's 15-213 Introduction to Computer Systems [1] should absolutely be on the list. It's a mandatory class at CMU that everyone, who gets remotely near CS curriculum, must take. I feel it's completely justified. The lucky CMU students were able to take a version of this class since 1998.

[1] https://www.youtube.com/watch?v=4CpHpFu_KYM&list=PLbY-cFJNzq...