* ActorAllusion: Freddy's bones knock Neil into his supposed grave and starts shoveling dirt on him. This references Neil's actor Graig Wasson being buried alive in ''Body Double''.
* BannedInChina: The film was banned in Queensland, Australia for a while due to its drug references.
* HeyItsThatGuy:
** A young Creator/LaurenceFishburne plays the orderly.
** This [[Series/{{Medium}} wouldn't be the last time]] that Patricia Arquette would play a character with PsychicPowers.
** [[Series/TheDrewCareyShow Mrs. Louder]] plays the spooky nun.
* ThrowItIn: Creator/RobertEnglund improvised quite a few of Freddy Krueger's one-liners, but the best-known example happened in ''Dream Warriors'', in a scene where Freddy emerged from a television set and killed a girl by smashing her head into it. The scripted line was "This is it, your big break in TV!" which Englund said on the first take. When the director went for an alternate angled shot however, Englund changed the line to "Welcome to Prime Time, [[ThisIsForEmphasisBitch bitch]]!" The different camera angle made it easy to edit the two lines together, and it became probably Freddy's defining one-liner. According to [[Wiki/{{Wikipedia}} The Other Wiki]], the line was originally "You're on TV now, girl!"
* WhatCouldHaveBeen:
** The original idea for the film was Freddy [[TheFourthWallWillNotProtectYou invading the real world]] and killing the people responsible for the ''Elm Street'' films, an idea that would later be used in ''Film/WesCravensNewNightmare''.
** Creator/RobertEnglund wrote an unused treatment for the film.
** The script had Sally Kellman in the scene which featured Zsa Zsa Gabor.
** Among the concepts and FX that had to be abandoned for various reasons:
*** Taryn's head was supposed to explode when Freddy stuck in the needles, but the gag wouldn't work correctly.
*** In the original script, one of the Warriors dreams up a giant robot to fight Freddy. Budgetary constraints made it impossible.
*** FX creator Mark Shostrom created a desiccated "little girl corpse" which Kristen would discover she was holding, but it was decided that the item was ''too'' grotesque. A miniature skeleton was used instead.