Hellraiser/YMMV

Adaptation Displacement: The number of fans unaware there was ever a book is astounding. The fact that the book and the film have distinctly different titles doesn't help.
Complete Monster: Frank Cotton, Julia Cotton, Dr. Phillip Channard, Pinhead unbounded, the list is endless.
Draco in Leather Pants: Doug Bradley famously quipped about how much fan mail he gets from women and how they love Pinhead, even though he hasn't done a good, benevolent thing over the course of the entire film franchise.
Ending Fatigue: Hellworld.
Evil Is Sexy: Julia's motivation for choosing bad-boy Frank over his good brother Larry.
Fan Nickname: Pinhead was originally listed in the first film's credits as "Lead Cenobite," and Barker himself has been known to say calling him "Pinhead" makes him sound stupid. Which didn't stop the sequels from adopting the fan nickname as the official one.
Fanon: Event Horizon is considered by many as an unofficial Hellraiser film.
Memetic Mutation: "Jeeeeesuuuuuussss wept....."
Motive Decay: Arguably Pinhead. Originally, his goal was to claim whoever opened the box (with the twist being that he was open to compromise and making deals with his victims to spare them, at least temporarily) and bring them pleasure via intensely violent and gore-filled sadomasochism. By the third film, he's now a general of a hell dimension and the box, rather than being a tool for pleasure/pain, is nothing more than a cursed object used by Pinhead to ensnarl fresh victims to turn into lackies to swell the ranks of his unholy army.
- It is implied that having his orderly half split off at the end of the second film is largely to blame for this.
- Pinhead vs. Marshall Law, which came out during a period when Clive Barker attempted to launch a Pinhead-centric comic book for Marvel, attempts to save throw Pinhead's Retool within the context of the then pending third film by suggesting that while the Cebonites are agents of Hell, they believe in order over chaos and that Pinhead's various schemes to conquer Earth are all an elaborate Plan to scare humanity, make them stronger, and ultimately more fearful of evil.
Narm: The Pseudo-Cenobites in the third film. Some would also count the Channard Cenobite from the second film. A lot of Joseph's lines in Hellraiser: Inferno as well. The excessive number of times it cuts to a flock of birds in Hellworld, plus when Chelsea karate kicks the Host off a balcony. Pinhead's attempt to express fear, in his deep, monotone voice: NO. DON'T. DO THAT.
Narm Charm: Revelations has a low budget that shows, campy acting from overcompensating actors, and a replacement for Doug Bradley playing Pinhead that couldn't be more obvious and distracting if they'd tried. On the other hand, the script is a genuinely clever Call Back to the first two movies that goes out of its way to adhere to their mechanics, characterizes the Cenobytes as the pure Sense Freaks they originally were without all the For the Evulz stuff, and puts new twists on old tricks like a victim of the Cenobytes trying to exchange another for himself only for Pinhead to find the trade worthless. It's like They Just Didn't Care except for the writer, who picked up the caring slack.
- One of the reasons for all of the call-backs and references to the first film, is due to the fact that Revelations was originally conceived as a full-on reboot. The low budget and lack of Doug Bradley was due to the fact that they waited so long that the rights were going to expire if they didn't have something made within an ultra-ultra short period of time to get the film made and in theaters (where it played in a single theater as a free showing only once).
Nausea Fuel: It's Clive Barker. Hellbound is the worst, with the maggot-infested corpses and the inmate shredding himself with a razor, but all of the movies have it to some extent.
Sequelitis: The first two films are worth watching. The others are all over the place, with Hell on Earth, Bloodlines, and Inferno being the only generally-well-liked ones.
Special Effects Failure: There was no budget left to complete the special effects in the first film, so Clive Barker and "a Greek guy" hand-drew them on the film over the course of a weekend. Barker was impressed with the results, considering how much alcohol the two of them had consumed.
Squick: Again, it's Clive Barker.
Villain Decay: Pinhead is a rare inversion. In making him more evil (and usually the main villain) after the second film, the writers also made him less interesting.
- That's really only true for the third and fourth films; the fifth, sixth and seventh installments feature Pinhead about as much as the first two and in the eighth, the real Pinhead only shows up at the end.
The Woobie: Kirsty, Terri from Hell on Earth, and Amy from Deader. Steven starts as this in Revelations, particularly in the flashbacks when he can't stomach Niko's "needs" anymore and Niko turns on him as a result. And then it turns out he's the second Pinhead.
Woobie, Destroyer of Worlds: Most of the Cenobites, when you understand that all of them were created from severe, unyielding emotional pain.