You have to realise when this film was made and understand the centiment of the time to really appreciate it. This was a controversial masterpiece back in the early 70's. The injinuity (due to lack of technology) to create the sounds and special effects were ground breaking and some of the things the cast had to endure to achieve the required results would see the directors and Co jailed today for cruelty. Taking these things into account this is my number 1 film of all time.