AlphaGo
The film/documentary of the Deepmind company's attempt to build an AI to take on the best GO player in the World.
It was riveting actually. I had no idea just how big the game of GO is in China and Korea, it's literally given the same sort of coverage as Soccer is in the UK, with live punditry and move by move analysis.
Anyway, it covers the tournaments with the European Champion, Fan Hui, a mere 2nd Dan professional GO player and then the tournament with legendary Lee Sedol 9th Dan, a savant of the game if ever there was one. Seedol sees the game as if he has access to the Matrix, he's quite extraordinary (and 18 times World Champion by the age of 32).
The way that AlphaGo went beyond usual hard-coded playing techniques rattled both players from the start. They were clearly expecting to play a program based on a collection of human-based moves from history but AlphaGo went beyond that, and played moves no top player ever woud. Lee Sedol called it "creative" and said it was a paradigm shift* in how to play GO.
Fascinating stuff and a glimpse into where AI could help humankind solve difficult issues by looking at them from a different point of view.
*AlphaGo played with the understanding that it only needed to win by the smallest margin, whereas humans tend to look to capture the most territory they can.
In this respect it truly played "the long game" and, at times, looked like it was making errors.....to the humans watching on.
