Part of Ken Russell's final stretch as a truly great director, helped by a marvellously profane script from Barry Sandler and a superb lead from Turner. Perkins does his usual turn but at least the movie around him is better than, say, Edge of Sanity.
The book was science fiction but the movie is a period piece, which demonstrates where this adaptation went wrong. Instead of being a near–future warning it becomes this–never–happened nostalgia. Watch Cronenberg's Shivers instead.
This was very controversial despite being a very toned down, smoothed out adaptation of a book that was already almost quarter of a century old, proving there's still plenty books can do that films can't – even if just because they won't let you.