If there is such a beast. There has to be a "best" in every category, right, when it comes to pop entertainment, meaning most enjoyable and capturing the essence of the category in which it figures, in this case Halloween movies. Donnie Darko leaps (hops?) to mind, an odd little theory generator -there are as many theories about what it means as there are people who have seen it- and autumnal costume drama. Best rabbit mask, to be sure.
Does a movie have to take place in October to qualify for this coveted slot? That qualifies ET the Extra-Terrestrial, which might not be scary to anybody but those of us with a horror of raisins on legs from another star. (Personally, I'm hesitant when I encounter them.) Or does "best" mean "scariest"? Day of the Dead takes place on Halloween, is terrifying, and has zombies in it -that automatically puts it at the top, right? Trick 'r Treat and Halloween are no-brainers for contention. When it comes to scary, The Exorcist and Poltergeist and The Nightmare Before Christmas can't be forgotten. So many good movies for one day of the year.
Thinking about this brings me back to Frank, the scary rabbit-angel from Donnie Darko. He inspires me to extricate myself from the couch and remember what's best about Halloween: strapping into a good costume and getting out there to enjoy the holiday.