Even the truest Tim Burton fans may not know that The Nightmare Before Christmas was based on a poem he wrote, which outlines the story we’re familiar with today. He was working as an animator for Disney and gave them the idea, but it took some time before it was developed into the movie. Watch below his original poem, animated and read by Christopher Lee (most likely you'll know him as Saruman from The Lord of the Rings series).
Like it? You may also like his 1982 stop motion animation short film, Vincent.