An educational film (in this case literally film) from 1975 about how to prevent programming errors:
Critical Program Reading
https://invidious.slipfox.xyz/watch?v=7hdJQkn8rtA
Besides the actual lessons (readability/naming convention, formatting, structuring, difference between coding and programming), I liked these parts:
"Nothing is wrong with you. Remember: Criticise the programme, not the people."
"That's hard for me." - "Don't apologise. Nobody uses his brain more than necessary."