This episode of the Ghostbusters cartoon has the Necronomicon, Miskatonic University, Cthulhu Cultists, Shuggoths, Deep Ones, Old One Summonings, Everything!
The cultists even do our favorite Cthulhu chant. Ia, Ia, Cthulhu Fhtagn!
This show actually holds up pretty well and is entertaining in a Saturday morning cartoon kind of way.
I had fun watching it even though the way they finally stop Cthulhu is totally unlikely.
Sorry that it's in 2 pieces.