Oliver Stone was hoping that Jim Morrison would appear in the movie. It seems odd that Stone would have any hopes of Morrison appearing in his movie considering that singer died 15 years before the film came out, but at one time it was a real possibility. Oliver Stone told Entertainment Weekly that he had been working on his Vietnam War epic since the late 60s and had gotten a rough draft to Jim Morrison in 1971.
“It was another version of it — a very mythic version. The character dies in Vietnam and goes to the Underworld. A lot of mythology. I couldn’t deal with Vietnam yet in a completely realistic way at that point. And I did send it to Morrison because it had a lot of Doors music in it. And he had it in his apartment in Paris when he died. It was returned to me in 1990 when I made The Doors. Very bizarre.”