Used to be into creepypastas and the like, then grew tired of them. I still think the NES Godzilla Creepypasta was really good, but IDK if it's still archived anywhere.

More recent stuff I enjoyed: Super Mario 64 Beta Archive was great, despite its unfortunate demise. MyHouse.wad isn't a video series, but it does have some ARG elements to it that help cement it as one of the all-time greatest Doom WADs.