"The other movie that George talked about, going back to Lucasfilm movies, was "American Graffiti," just in terms of songs being super strong and driving the story, was a big influence. And then "The Princess Bride," one of my favorite movies, was a big influence. It's a fairy tale that was magical and funny, so tonally it was nice. "Labyrinth" was nice because it was a Lucasfilm production, but it was weird. Thematically we wanted things that were weird but that you loved later. So weird is important."
January 1, 1970
https://en.wikiquote.org/wiki/Strange_Magic_(film)