This was the first film shot with Arriscope anamorphic lenses, which were created for Arri by the German manufacturer Isco-Optic.
(at around 51 mins) Meg Tilly came up with the line, "Where you gonna go? Where you gonna run? Where you gonna hide? Nowhere."
Even though Marti and Jenn are supposed to be in high school, Gabrielle Anwar (Marti) was 23 years old when the movie came out and Christine Elise (Jenn) was 28.
Body Snatchers is the third film adaptation of Jack Finney's novel, the first being Invasion of the Body Snatchers (1956), followed by the remake of the same name Invasion of the Body Snatchers (1978). A fourth adaptation was later made, The Invasion (2007).