Around the time Ghost Busters was on the air, there was a syndicated series that celebrated vaudeville. Unfortunately, both lasted just one season.
In "The Dummy's Revenge", Kong (Forrest Tucker) & Spencer (Larry Storch) deal with a ghostly ventriloquist (Tim Herbert) and his dummy, who mistake our heroes for some old rivals. Scope out the team's attempt at doing some song & dance. Plus, Spencer decides to take up ventriloquism himself.
One of the sillier entries in the series.