For a while, the obviousness and flat-out vulgarity are sort of entertaining, and it might be possible to enjoy the movie as a camp classic if you could ignore the mean-spiritedness that keeps breaking through.
Stone is not the most subtle of directors, but he has the ability to translate his passion for subject matter (he's an unabashed admirer of Morrison) to the screen with a strong visual flair. That talent in evidence here.
Whatever reservations one may have about this exhausting, dark-side-of-the-'60s epic, there can be little doubt that Stone has captured a particular, bombs-away brand of rock & roll excess with definitive candor.
The attempts to plumb Morrison's sensitive side, his (pretentious) philosophical bent and his struggle to channel his considerable talents positively are something of a blur in the trippy kaleidoscope.