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This [Behind the Code](https://www.youtube.com/playlist?list=PLn5sTGew1WGD2Tnspn9vhpLGf-kqDRbYy) series examines hit detection, AI, glitches, and many more topics in the context of classic NES game code. It looks at The Legend of Zelda, Megaman, Contra, SuperMario Brothers, and many others.
It is perfect nerd bait for me-- perhaps some of you are similarly unusual and will enjoy it.
@johnnylogic They had a superb episode on the Contra code