Oliver Stone's fascination with Jim Morrison may be in part due to their similiar backgrounds. Both were voracious readers from comfortable, middle-class families who rebelled against their conservative fathers (Morrison's an admiral, Stone's a stockbroker). Morrison, like Stone, was also a film graduate and it is this common social background that seems to make Stone believe that he and Jim are 'Dionysion' brothers bonded across time and space.
Stone had done credible research before the making of this film, he conducted interviews with over a hundred people and the sets and concert shots are scruplessly detailed. Instead of a straight ahead biopic, Stone used the Doors' songs themselves as the foundation of the story. The film would become a poetic depiction of Morrison's life. Stone has used this technique before, in many of his movies, characters are too often representative architypes (Elias & Barnes, Gordon Gecko), rather than 3-dimensional real people. Through these architypes Stone can then rather symplisticly proclaim his views about the time and era we're looking at e.g. the 60's.
Again we see Stone's MTV-style shooting technique where images come thick and fast in contrasting styles. This is supposed to represent the flashes of insight Morrison was prone to. Even the lighting and colour of the film get progressivly darker as we follow Morrison's obvious death obsession, another trait Stone believes he shares with Morrison. In fact Stone identified with Morrison so much that during the making of the film, he drank heavily and even indulged in peyote.
Ray Manzerak must find the royalties he's made from the movie hard to stomach.