John Carpenter, who did the music for this film, was set to direct the original Charlie (1984), but was replaced when his previous film, L'effroyable chose (1982), failed at the box office. He would instead direct another Stephen King adaptation, Christine (1983).
Final film for Executive Producer Martha De Laurentiis, who died December 4, 2021. Her first film as a producer was the original Charlie (1984), and she would go on to produce several other Stephen King adaptations with her husband, Dino De Laurentiis.
After receiving backlash for nominating 12-year-old Ryan Kiera Armstrong for the Razzie for Worst Actress, the Razzies have introduced an age limit allowing for nobody under the age 18 to be nominated and have removed her name from the ballot. When the ceremony came, the Razzies gave themselves the Worst Actress Award as a means of apologizing.
In the back alley when Charlie sees a stray cat there is a dumpster for the waste removal company "Joyland" referencing Stephen King's book of the same name.
The beer that Irv offers Andy is labeled 'Ayuh', a northeastern phrase akin to 'yep' that is heavily present in the writing of Stephen King.