- Box Office Bomb: The film cost $25 million to make and Cannon expected it to be a blockbuster. Final box office gross: $11 million.
- Executive Meddling: Tobe Hooper initially wanted to make Lifeforce a much sillier movie titled The Space Vampires, the same name as the book on which it is based. The execs forced him to make the story more serious, and switch to the present title.
- Hey, It's That Guy! : If you're a fan of TV movie crime dramas/miniseries, you'll recognize Carlson as having played both Charles Manson and Ed Gein. Oh and Patrick Stewart plays the director of the Asylum.