The Nightmare Before Christmas (1993)
This stop-motion animated fable was a big hit when it was released -- not only at the box office, but critically. It was praised for its stunning originality and for the excellence of its execution. In addition, it was praised for being a completely absorbing fable that both grownups and children can enjoy, so long as the children are able to its handle scary bits (beginning perhaps at age seven or eight). In the story, Jack Skellington (voice of Chris Sarandon) is the Pumpkin King of Halloweentown, a realm of reality where the inhabitants make it their life's work to scare humans on Halloween. He's good at his work, and is very popular around town, but it all bores him. In a funk one day, he wanders into a wood where every tree is the doorway to realms serving one or another human holiday, and falls through the doorway into Christmas. There, he sees scenes of such glee and good will that he is overwhelmed. He returns to Halloweentown with the inspiration to persuade his fellow citizens to kidnap Santa and do Christmas in their own Halloweentown way -- complete with snakes and shrunken heads.