Trivia: Michael Myers' mask is a Captain Kirk mask turned inside out, then painted white with ruffled hair and a few other tweaks.
Trivia: In the first Jaws movie, the name given to the shark was Bruce, named after Steven Spielberg's lawyer. In this movie, the sharks were called Fidel and Harold. Harold was the name of David Brown's lawyer.
Trivia: Though Phil Silvers is shown prominently in the credits, he has only about 2-3 seconds of screen time at the end of the movie. Silvers suffered a stroke in the early 70's; "The Cheap Detective" was made in 1978. His speech had become slurred and likely affected his performance abilities.
Trivia: The winter scene was shot at Eagle River, Wisc. which is in the deep woods. When the Hollywood crew showed up, they brought along fake trees. Those trees were definitely not needed.
Trivia: In the opening title sequence we see a garbage truck going through the Golden Gate Bridge toll booth. We would find out later that these trucks were used to transport the pods. The truck is traveling southbound from Marin County into San Francisco which is appropriate, (intentional or not) since the book Body Snatcher was set in Mill Valley, in Marin County, about 10 miles from the bridge.