"The Wizard of Oz" is America's favorite children's book. And among critics and librarians, it was once the most despised.

It's widely known now that the cinematic adaptation tells the tale of how the Wicked Witch of the West from the 1939 original was previously close with Glinda the Good, with the two actually having been roommates at university.

With Wicked now in theaters, the adaptation of the Broadway musical — which itself is an adaptation of Gregory Maguire’s novel — has sparked a renewed interested in all things Wizard of Oz. Not only has there been an uptick in sales of copies of Maguire’s book (and a prequel novel,

I grew up watching The Wizard of Oz; I played it on repeat as a little kid. However, I hadn’t revisited it until after I saw Wicked in theaters right before its premiere on the

Eagle-eyed Wicked viewers have noticed a hidden tribute to the original 1939 Wizard of Oz movie - but it happened so quickly you might have missed it. If you've watched the new Wicked movie - which is an adaptation from the Broadway musical - you might have noticed a number of nods to the original movie, which was released decades ago.

Wicked movie director Jon M Chu has explained why some elements of The Wizard of Oz prequel don't match up. The film tells the story of how multiple characters from Dorothy Gale's iconic adventure in Oz came to be the way they are,

On top of the many confirmed connections to The Wizard of Oz, one likely theory proposes that a Wicked character brought Dorothy to the Land of Oz.