Long Now Foundation's Seminars
Really great set of 1-1:30 hour lectures on many topics but mostly about long term thinking and experiences.
Science for the People
Topical science interviews
The British History Podcast
Great presentation of UK history from the beginning
The D6 Generation
Boardgames and more.
Meeples & Miniatures
Military, fantasy, and science fiction miniature wargames
The Memory Palace
Forgotten people doing big and small things
History of medicine
You are not so smart
The qualities of thinking and our flaws
Trivia and oddities from the past