I subscribe to enough channels through RSS to the point where I have too many videos to watch, honestly. Just by paying attention to other people's recommendations through threads like this, videos friends send me, crossover videos between channels, and looking at the channels featured by the channels I already watch was enough to get my feeds to their current state.
KBash and Jason Graves are my current favorites. Highly recommended if you're interested in video essays on retro and obscure video games.