Awesome Music: Not just the famous Silver Shamrock jingle (see below) but the general musical themes. You could tell this was a John Carpenter movie from the first seconds.
Bizarro Episode: For the franchise. Although, if the original plans for an anthology movie series had continued this would've been averted (depending on what the other films would've been like).
Broken Base: Many people were outraged at the lack of any continuity with the first two films, and in general this film is written off as a bizarre non sequitur. Others, though, think that Carpenter's anthology idea was promising, but unfairly killed by fans who wouldn't accept a Halloween film without Michael Myers.
Complete Monster: Conal Cochran is the CEO of Silver Shamrock Novelties, a company known for its Halloween masks, which it shipped all over the United States. Cochran had built these masks with a computer chip made from a fragment of Stonehenge. When Silver Shamrock's commercial would air on Halloween night, the chip was to unleash a lethal swarm of insects and snakes, killing the wearer and anyone in the immediate vicinity. Cochran is shown demonstrating how these masks work on an innocent family, causing them to be poisoned and eaten. His plan is to kill thousands of children all over the country, partially to bring back the darker aspects of the Celtic festival Samhain, which he connects to witchcraft, but also just because he considers this mass murder to be a fun joke, the best ever in fact, because it's a joke on the children.
Contested Sequel: While this film has gained a cult following, it still tends to be polarizing to fans of other Halloween films.
Ensemble Darkhorse: Many feel that despite the burden of having to replace Michael Myers, Conal Cochran was a good villain in his own right, and the late Dan O'Herlihy delivered a performance that even those who dislike the film, cannot help but admire.
He's Just Hiding: It's implied Cochran may have survived, however, with the magic of Stonehenge transporting him to another location rather than killing him at the end of the film.
Writer/director Tommy Lee Wallace would go on, eight years later, to direct the miniseries adaptation of Stephen King's It— another film about a complete monster who kills children.
Daniel O'Herlihy plays a Corrupt Corporate Executive, something that Daniel would be well known portraying in the RoboCop films as "The Old Man." Both of Daniel's roles even had companies that are populated with cyborgs (well, Cochran's are robots designed to resemble humans, while "The Old Man" has several that were built from those who used to be human).
The fist clench of impotent rage from Challis as he watches the "demonstration" of the Magic Pumpkin advert's effect.
Buddy, bar none. Even if he had just watched his kid's head rot away before his eyes, and was now locked in a room full of poisonous snakes...
The fact that the Cochran somehow got a piece of Stonehenge, and when the hero asks him how Cochran simply Handwaves it with 'Now that's quite a story..."
Cochran's plan is so ludicrous and full of holes that it falls apart even under the slightest bit of logic or scrutiny, which the film itself even alludes to, by showing at one point that the tags in the masks (which contain the magic that makes them deadly to the wearer) are easily knocked out. There's also numerous other things, like expecting that a good bulk of the children in America have bought the masks without tearing or knocking the tags out and are at home to watch the broadcast instead of out trick or treating or in bed or watching monster movies on some other channel.
Squick: A whole lot of it, both when Cochran's robot mooks decide they want to kill someone, and when the masks' evil spells are triggered on their unwitting victims...
They Wasted a Perfectly Good Plot: Many who dislike the film admit that the concept of the film and the anthology film series has potential, but feel that the execution is both lousy and laughable, or at the very least they should have went with another idea.
Vindicated by History: While the film was absolutely savaged by both fans and critics, but preformed adequately at the box office, though its gross paled in comparison to the first two films and even some that followed (such as Return of Michael Myers and 20 Years Later). It has since picked up a fairly significant cult following for its unique plot, fantastic score and atmosphere, and Visual Effects of Awesome.