Jizz

Jim Rash shows up quite a bit in Reno 911! and I'm pretty sure it's just Dean Pelton before he moved to Greendale. (NSFW)

community

Greendale makes an appearance!

rickandmorty

What each of the Greendale Seven's Reddit activity would look like

u_meowheadz

[Ponyplay/Trapped] 2nd Annual Greendale Pony Parade by Yes-I-Did

Inanimate_TFs