The 1954 "Ghostbusters"
There isn’t much to say about this one beyond the creator's description. All I can say is thank God for the internet and its ability to keep me away from doing actual work.
What if Ghostbusters, the movie, was shot in 1954 instead of 1984? Who should be part of the cast? Would they have the same equipment? Who would they battle? Considering Dan Aykroyd's concept owes a lot to Bob Hope, Abbott and Costello, and Lewis and Martin comedies of the 40s and 50s, it is not that big of a stretch to speculate.