A few times a month before bed, I'll watch a GDC talk instead of browsing Netflix or reading a book. Here's two of the best I've seen recently:
A very finely honed list of bullet points on the travails of designing and bringing arcade VR experiences to market. It's only 30 minutes but packs in the information, putting many talks of double the length to shame.
I don't play many 4X games, but listening to this dev makes me want to try out his. He talks about how he very determinedly combed through the back catalog of 4X games and tried to fix one or more of each of their problems in Old World. I think he also led design on Civ III and made Off-World Trading Company.