Andrew Wiles on proving Fermat’s Last Theorem (1995) [video]

3 days ago (youtube.com)

Full documentary: https://www.bbc.co.uk/programmes/b0074rxx

I've only skimmed it but Simon Singh's book on it seems reasonably accessible to non-experts

One interesting thing of FLT is Wiles is on record as saying it opened the door (I think. This is from memory) to Langlands Program, a series of mathematical connections

Harder problems of course exist, Riemann Hypothesis et al but FLT still took hundreds of years to solve

Just to check, this video isn't NSFW is it?