I really liked “Freeman’s Mind” (link to episode 1 from nine years ago). It was super simple, literally just a first-person perspective playthrough the Half-Life games with narration instead of commentary. The narrator acted like the mind of Gordon Freeman and it was really funny. Sort of harkens back to a simpler time on youtube, when 9 minutes of a guy talking as if he were a fictional character while playing a video game was prime content. I remember watching this and in the comments I was begging Ross (the creator) to do Half-Life 2 when he finished with 1.