An animatronic of Lee Marvin's character Kid Shelleen from Cat Ballou was made, but Marvin's family refused to sign the rights to his likeness because of the way he looked.
The belt buckle used on the John Wayne animatronic was the actual belt buckle John Wayne himself used until enough people found out about it and someone stole it.
Originally conceived as part of an "Entertainment" pavilion at EPCOT Center, Michael Eisner later convinced the Imagineers to design an entire park around movies, leading to the creation of Disney-MGM Studios (now known as Disney Hollywood Studios).