Dennis The Menace (animated 1986) episode 03 B "Ghost Blusters". (Thanks Daniel Cevallos for the idea!) While the title itself seems to be spoof, there is what appears to be music used in the episode that sounds like "Ghostbusters" a bit. I went ahead and collected all three parts of the short with the music playing. Interesting note, along with the fact that this show was made by DIC around the same time as Real Ghostbusters, it also has credits at the end for music being by Haim Saban and Shuki Levy which also did additional music for Real Ghostbusters. DIC had at one point, a good three or four shows being done all in the same year, and it's interesting watching how many things cross over from one show to the next. "Dennis The Menace" shared many of the same sound effects and music with "Inspector Gadget", "Heathcliff and the Catillac Cats", and "Real Ghostbusters" to name a few. Source for footage "dhx retro tv uk": http://www.youtube.com/watch?v=h1awjIWcPnM