What We Almost Got Instead:
According to the initial proposal for The Wizard of Oz, the movie we almost got would have eliminated all references to magic and given everything in the story a rational/depressing explanation.
Wicked Witch? Bad case of gangrene. Flying monkeys? Results of a drunken orgy at the zoo.
Originally, Mervyn LeRoy and William Cannon wanted to do a dark, "realistic" retelling of the Oz tale, inventing the gritty reboot 65 years before Batman Begins, only with an even more disturbing Scarecrow. In their version, the Oz Scarecrow would no longer be a literal dummy filled with straw who needed to believe more in his own intelligence, but a flesh-and-bone human who was so stupid that he could only get a job standing in a field and chasing off birds.
And dreaming about the rabbits.