This is one of Ken Russell's best films. He manages to balance plot and wild visuals as never before. The acting is also first rate. I watched it again recently I think it still holds up surprisingly well compared to many modern sci-fi movies. The plot is intriguing, I keep thinking that there might be some truth to the concepts presented, and the fact is that our own brains are still largely unexplored territory. A special mention to the extraordinary music written by John Corigliano, and for which he was nominated for an Academy Award. It dares to be loud and violent, and complements the visuals extremely well. This is a wild, original movie unlike any other.