11. Nancy Loomis, who played Annie, was actually 28 years old at the time of production. She was married to Tommy Lee Wallace, the film’s production designer, who would go on to direct Halloween III and the TV-movie adaptation of Stephen King’s It. Loomis would play a different character, Linda Challis, in Halloween III.
12. Nancy Stephens, who plays Marion Chambers (the nurse in the car with Loomis), returned in Halloween II, where she met and would later marry that film’s director, Rick Rosenthal. Stephens also returned for Halloween: H20; Rosenthal would direct the film that followed that one, Halloween: Resurrection.
13. Peter Cushing and Christopher Lee turned down the part of Dr. Loomis. Donald Pleasence, who took the role, didn’t understand the movie at all; he only made it because his daughter had liked Carpenter’s previous film, Assault on Precinct 13.
14. Pleasence was the closest thing they had to a movie star. His $40,000 salary added $20,000 to the film’s original $300K budget. All of his scenes were shot in a week, and for that week, the production rented him a Winnebago. (The only other production vehicle was a VW bus that carried the lights and equipment.)
15. The influence of Alfred Hitchcock is all over the film — most explicitly in the name of Pleasence’s character. Sam Loomis is not only the name of the doctor pursuing Michael Myers; it’s also the name of Marion Crane’s lover (played by John Gavin) in Psycho. The role was taken over by Malcolm McDowell in Rob Zombie’s 2007 remake.