a breathtaking cocktail of philosophy, eye-popping visuals, jaw-dropping pretentiousness, rib-tickling humour and heart-stopping action. From exotically hallucinogenic visions of a lunar crucifixion to the claustrophobic realism of a bar-room brawl, via such twisted vignettes as Robert Loggia karaoking to Al Jolson and Moses Gunn in Superman drag (don't ask), Blatty directs like a man with no understanding of, or interest in, the supposed limits of mainstream movie-making. The result is a work of matchless madness which divides audiences as spectacularly as the waves of the Red Sea, a cult classic that continues to provoke either apostolic devotion or baffled dismissal 20 years on.In addition, Blatty considers the movie as a sequel to the Exorcist. The astronaut in The Ninth Configuration makes a brief appearance in The Exorcist. If it is a sequel, it is a sequel based on theme not on story.
In any case, check it out. It may be hard to find - I had to order it from a seller on Amazon.