The Black Cauldron (1985)
"For years, none of my friends believed that The Black Cauldron existed. I saw it in the theater, and never saw it again until several years ago. Convincing my friends that it existed (before the internet) was no easy task."
Rik Mayall was a legend.
I also found out there are deleted scenes, including one were the Horned King's undead army murders his henchmen in a very disturbing and frightful way. The movie's a lot darker than any Disney film I know of.