Before the witch trial, you can see Sir Bedevere tying coconuts to a swallow, no doubt to test the theory people argue about elsewhere in the film.

Brave Sir Robin's royal minstrels are the British folk band Saltwater Sealion - Steeleye Span were originally asked to play the roles, but they declined.

The idea for the killer rabbit came from the facade of the Cathedral of Notre Dame. Near the entrance, in panels depicting various scenes of man's infirmaties, one panel illustrates cowardice by showing a knight fleeing from a rabbit.

In the scene where the chanting monks are parading through the city streets, watch the overhead view closely and you'll see that one monk staggers and nearly collapses after hitting himself in the head.

Originally, the cast were going to ride horses, but then they realised they didn't have the capital to do so. They therefore came up with the idea of artificially creating the sound effect using empty coconut halves. They then decided that it would be a good idea to actually include the coconuts in the film, hence the film's long-running joke - it was never meant to be included.

In the scene where the mob is weighing the 'witch' there are two quick shots of the crowd just as she is being put on the scales. In the second shot, one of the men is ex-Beatle and co-producer George Harrison.

After they come to the conclusion about weighing the witch to see if she weighs the same as a duck, and then the scales balance, watch the scales after they drag her off to be burnt. The side which contained the duck is obviously loaded to start with, as it sinks lower than the other pan when there is supposed to be nothing on the scales. Hence the witch weighing 'the same' as the duck, and seemingly proving the villagers rigged the whole thing.

Almost all, if not all, the chain mail armour in this film is actually thick wool, which was very uncomfortable for the actors because it was often raining where they were filming, and the wool would become very damp and very heavy. Submitted by Gary O'Reilly