Trivia: Rick Baker promised John Landis that he would work with him on An American Werewolf in London when John had enough money to make it. After waiting eight years, Rick decided to work on The Howling, another werewolf themed movie. One day, right out of the blue, John called Rick and told him he had finally had the money to make American Werewolf. According to Rick, when he informed John that he was already working on another werewolf movie, John started screaming and swearing at Rick. Rick calmed John down and told him he would still do American Werewolf and leave the werewolves for The Howling to Rob Bottin. Rick has stated that to this day, John has still not forgiven him for working on another werewolf movie.
Trivia: John Landis got the idea for the film while working on Kelly's Heroes (1970) as a production assistant in Yugoslavia. While watching a gypsy funeral (where they lace the coffin with garlic so the corpse doesn't come back to haunt everyone) he wondered how a western culture would react to being visited by a dead friend.Rebecca Bennett
Trivia: Only four American work permits were requested of the British government for the production: for director John Landis, makeup artist Rick Baker, and actors David Naughton and Griffin Dunne. The first three work permits were granted by the British government without question. But the British office of Actors' Equity questioned the necessity of a work permit for actor Dunne, claiming that there were already plenty of young American actors living in Great Britain who could portray the role of Jack. It was only when director/screenwriter Landis threatened to rewrite the script and re-title the movie "An American Werewolf in Paris" that the equity office reconsidered the application and granted Dunne his work permit.