I recently listened to the episode on The Antikythera Mechanism and found it quite fun - https://www.bbc.co.uk/programmes/m0024x0g

Also, I wanted to mention something interesting - back when LLM-driven applications were just emerging, someone posted on Hacker News about how they categorized In Our Time episodes using the Dewey Decimal System with LLMs. Cool stuff - https://news.ycombinator.com/item?id=35073603