The Wizard of Oz - What's the Difference?

We're not in Kansas anymore, and neither was the film adaptation of The Wizard of Oz. The 1939 classic turns 80 this year, so it's time to look back at Dorothy and Toto's journey from the pages of L. Frank Baum's book, to the glorious technicolor screens of the movie. So gather your courage, you Cowardly Lions, open up those Tin Man hearts and pick your Scarecrow brains because it's time to ask, What's the Difference?!