Knights Who Say Ni in fear. After this demonstration of their power, the head knight threatens to say "Ni!" again unless the travelers appease them with a shrubbery; otherwise they shall never pass through the wood alive. When Arthur questions the demand, the knights again shout "Ni!" until the travelers agree to bring them a shrubbery, which the head knight specifies must be "one that looks nice. And not too expensive." In order to fulfill their promise to the Knights of Ni, the party visits a small village, where Arthur and Bedivere ask an old crone where they can obtain a shrubbery. The woman
Monty Python and the Holy Grail with candles underneath the frame (to give a heat haze). This was a low-cost method of achieving a convincing location effect. On the DVD audio commentary, Cleese described challenges shooting and editing Castle Anthrax in "The Tale of Sir Galahad", with what he felt the most comedic take being unused because an anachronistic coat was visible in it. Castle Anthrax was also shot in one part of Doune, where costume designer Hazel Pethig advised against nudity, dressing the girls in shifts. In the scene where the knights were combatting the Rabbit of Caerbannog, a real white rabbit was used, switched