Some talk shows have a tradition where the hosts dress up for Halloween. Usually, this involves elaborate costumes and themes or skits. In the case of Live with Kelly, it's basically a perennial sketch show.
Halloween episodes tend to be rare in British series as the occasion is less of a big deal in the United Kingdom, but My Family (often cited as an "American-style" sitcom) did have one - which, for no apparent reason, was released in March.
7th Heaven: The first season had a Halloween episode where 6 of the 7 family members actually go out to celebrate Halloween but Mary (a young Jessica Biel) makes a point to stay home alone to eat ice cream, have a bath, and dance around the house (the scene is rather well-known still), stating that "This is the only evening of the year I can have the house for myself!" (given that they are a family of 7 (later even 9) that also constantly have visitors, that's probably fair). The rest of the episode figured An Aesop where younger sister Lucy initially was scared of a disfigured old man but learned that she shouldn't judge people on their appearance, and he actually had a Heart Of Gold. Catherine Hicks, who played the mother in the series, later said that out of all the 11 years of episodes, this was her favorite one.
666 Park Avenue has Episode 5, "A Crowd of Demons": The Dorans throw a costume party, which is crashed by both a ghost who tries to kill Jane, and someone with a grudge against Gavin.
The Addams Family had a Halloween episode called "Halloween with the Addams Family", later remade as an episode of The New Addams Family, that had the family unintentionally scare off a pair of crooks who unsuccessfully tried to rob them on Halloween night.
The second episode of American Horror Story: Asylum is called "Tricks and Treats" , originally aired close to Halloween, and takes place on the night before Halloween, but whether Halloween is relevant to the episode is unclear; it might be the reason the kid who is brought into the asylum is possessed, but nothing confirms that.
Angel had a company Halloween party for the evil supernatural law firm, analogous to a company Christmas party.
Are You Afraid of the Dark? has "The Tale of the Twisted Claw" which featured two boys trick-or-treating at the house of a witch who gives them a magical claw that grants wishes.
Barney & Friends has a direct-to-video entry called "Barney's Halloween Party." It actually covers Halloween traditions well, but emphasis is placed on dressing up and playing pretend rather than anything scarynote except for a footprint ghost craft. Even then, the focus was on how messy the activity was .
Barney Miller has an episode involving a man who claims to be a werewolf.
Beauty and the Beast has an episode which showed Vincent able to walk among normal humans on Halloween, since in Greenwich Village, they think he is only another reveller in the annual Halloween parade.
The Benson episode "The Stranger" has the governor's mansion visited by a "Mr. G. Reaper" on a stormy Halloween night.
The Big Bang Theory had a couple of Halloween episodes. The first one had Penny hosting a Halloween party at her apartment and the four guys all dressed up as The Flash and had to change their costumes. The second involved a Halloween party at the Comic Book Store that Raj helped Stuart, the owner, set up.
In the Bones episode "Mummy in the Maze," Brennan, Booth, and "Squints" work to solve the murder of a girl left in a Halloween maze while getting ready for a Halloween party. Costumes include the captain of the Titanic, a cow (well, the back end of one), Catwoman, and Cher. Brennan and Booth end up catching the bad guy while dressed as Wonder Woman and a Squint, respectively.
Boy Meets World had one in season two where Cory thinks he's been bitten by a werewolf and one in season five where Jack dates a girl who claims to be a witch. Another episode, "Boys II Mensa" from season one, had a Halloween-themed B plot.
The Brady Bunch: "Fright Night," from Season 4, is all about ghosts and ghouls and the kids scaring each other. Originally aired in late October 1972, this episode is often rerun on Halloween.
"Halloween" in the first season centers on a bet between Holt and Peralta. Halloween is a busy holiday for cops and Amy hates it, thinking it makes everyone get drunk and act like a jerk. Charles tries to make her like it.
"Halloween II" in the second season is a sequel episode and establishes that the bet will be an annual thing.
"Halloween III" has the competition start to include the rest of the precinct. It involves a Macguffin that must be recovered by midnight.
"Halloween IV" continued the tradition with an elaborate heist to decide who is the "Ultimate Detective Slash Genius".
"HalloVeen" is a season 5 episode of Halloween Heist series. It involves retrieving a wrestling Champion belt, and ends with Jake proposing to Amy.
In Buffy the Vampire Slayer, Halloween is a holiday for the supernatural, and there's an unspoken rule about vampires and other supernatural terrors keeping to themselves and staying out of trouble for that day, but that doesn't make it any easier for the Scoobies.
Season 2 had "Halloween", where the trick-or-treaters in Sunnydale are subjected to a literal case of Becoming the Costume thanks to Giles' former friend, Ethan Rayne. This unfortunately includes Buffy, who chose to dress up as an 18th century lady in an effort to impress Angel, and becomes a Distressed Damsel for the duration of the spell. And just when you think things couldn't get any worse, Spike finds out about Ethan's antics through Drusilla, and comes pretty close to offing Buffy.
Season 4 had "Fear, Itself", where someone getting blood on a supposedly fake mystical symbol makes the college Haunted House significantly more lethal, subjecting Xander, Willow, Oz, and Buffy to their current fears. Xander gets rendered invisible to the others (being left behind while the others are at college), a simple tracking spell of Willow's gets way out of hand (getting too far out of her league with the magicks), Oz transforms and accidentally hurts Willow (losing control and hurting those he loves), and Buffy gets stuck fighting a bunch of zombies by herself (being abandoned by those she loves and being alone because she is the Slayer). Also memorable for introducing Anya's fear of bunnies, Giles making a door with a chainsaw, and the five inches tall Gachnar.
Season 6 had "All The Way", where Dawn sneaks out to raise hell with her friend Janice and a couple boys, only to discover they're part of a group of vampires trying to rebel against the "Halloween holiday" spirit. Also provides setup for some of the events in "Once More, With Feeling". (Willow using a spell on Tara, Xander and Anya's engagement, Giles's fear that Buffy isn't taking responsibility because of him)
There are two Halloween episodes in Charmed, the first being "All Halliwell's Eve" in season 3 where the sisters get sent back in time to colonial Virginia. Contains three Shout Outs as Phoebe dresses up as Elvira and Piper dresses up as Glinda. Phoebe also cackles while riding a broomstick. Another episode in season 8, "Kill Billie Vol. 1", is set on Halloween but has a separate plot entirely.
Chuck did a Halloween episode ("Chuck vs. The Sandworm") that among other things featured Halloween decorations, a Halloween party (with Chuck & Morgan going as a sandworm from Dune), and Morgan's new clothes style being mistaken for a Gordon Gekko outfit.
Community had one in each of its first four seasons.
"Horror Fiction in Seven Spooky Steps" has Britta discovering that one of the group displays homicidal tendencies, and pressuring the group into telling scary stories in an attempt to weed out the killer.
The episode "About Face" is set around Halloween, and featured a villain who killed his victims by cutting their faces off, after terrorizing them a bit with missing persons flyers with their image on them that he'd cover the inside and outside of their houses with.
"Devil's Night" has a serial arsonist who always strikes during Halloween festivities.
Dinosaurs had an episode which originally aired on October 31 where Robbie, stuck home baby-sitting Baby, told a scary story about becoming a were-caveman. This scared Baby so much he was going to tell on Robbie unless he was given candy. Since there was none in the house Robbie took Baby next door to ask for some.
Neighbor: Is this some kind of trick?
Robbie: No, it's just a treat for the baby.
They're so successful getting candy that they decide to do it every year.
The Dukes of Hazzard: "The Ghost of the General Lee" and "The Hazzardgate Horror" are two supernatural-themed episodes that were originally aired around Halloween, and are often shown in reruns at that same time of the year.
Even Stevens had an episode where everyone starts acting weird after getting eye exams. Turns out Ren was brainwashing everyone and turning them into "Renplicates" (The plot is a little reminiscent of Invasion of the Body snatchers.) In the end Ren is unable to fully make Louis, the only one that she hasn't turned yet, into a Renplicate. This then cuts to Louis telling the story to Beans. Louis tries to convince him that this is not a story and actually happened despite things appearing as if none of the events ever happened.
Everybody Loves Raymond has the episode "Halloween Candy" where Ray buys a pack of condoms on Halloween so that he and Debra can have sex after they take the kids Trick or Treating. But when they come back, they discover that Frank accidentally gave them all out to the Trick or Treaters, thinking that they were chocolate coins. Frank is dressed as Frankenstein's Monster, referring to Peter Boyle's role inYoung Frankenstein.
Family Matters did this once every year. In one of the more famous episodes, we meet an evil ventriloqist doll come to life named Steevil. In the final Halloween episode, he returns with a partner named Carlsbad.
Fraggle Rock had an episode (not explicitly referred to as a Halloween episode, but it was released on at least one Halloween-themed home video release) called "The Terrible Tunnel" about a place where Fraggles went and supposedly disappeared.
There are a number of episodes of Frasier set at Halloween, usually focusing on the show's traditional madcap antics wrung though a themed costume party of some kind. A notable party at Niles' apartment where the guests all dress as classic literary characters centers around Roz being pregnant and many overheard conversations that lead to hilarious confusions about the situation.
The episode "A Room Full of Heroes" sees Frasier holding a Halloween party where each partygoer comes as their personal "hero" (for instance, Martin comes as Joe DiMaggio, Daphne as Elton John, Roz as Wonder Woman and Niles as his father); Frasier himself dresses as Sigmund Freud, and one of the main jokes revolves around all the children thinking he eats brains.
Freaks and Geeks managed to squeeze one of these into its short run. In fact, "Tricks and Treats" was actually the second episode of the series.
Friends had a Halloween party featuring Chandler & Ross in the lamest arm wrestling match ever.
Game Shakers: the episode "Scared Tripless" about Double G pranking his son, and the other kids mercilessly.
Ghost Whisperer's Halloween episode has Melinda investigating a headless horseman.
Goosebumps: The afromentioned original series books were adapted into TV episodes.
Grimm had the second season episode La Llorona, featuring the titular spirit abducting children and drowning them, and Monroe borrowing a morningstar from the trailer to use in his decorations.
Happy Endings had one entitled "Spooky Endings" where most of the cast went to a huge Halloween bash and the married couple handed out candy to trick-or-treaters in the suburbs... and wind up getting their door stolen.
In the Haven episode "Real Estate", there is a Halloween party and then the heroes and some teens all end up trapped in a supposedly haunted house, which turns out to be a man who was turned into a house.
Henry Danger has the episode "Jasper Danger" in which Jasper dresses as Kid Danger for Halloween and gets mistaken for the real Kid Danger by a villain and is kidnapped to be used as a ransom against Captain Man.
Home Improvement did tons, maybe one every single year, often involving the Taylors throwing a Halloween party, Tim inventing new extra-spooky Halloween decorations, impromptu scary prank competions, etc. Highlights of the series.
How I Met Your Mother had "The Slutty Pumpkin" in Season 1, wherein we see Ted's Halloween tradition of going to the same Halloween party every year in hopes of reuniting with a girl he met wearing the costume of the episode's namesake at that party four years prior. Meanwhile, Lily and Marshall try a Halloween double date.
iCarly has the episode "iScream on Halloween", which deals with Carly, Sam & Freddie hosting an episode of the eponymous web show from an apartment they believe is haunted. Meanwhile Spencer has to carve the world's biggest pumpkin, but has lost the time to buy candy and has to deal with trick-or-treating kids he is giving random objects to.
The October 31, 2016 episode sadly did not go to the same level and was not a full Halloween episode, though it did have a Halloween-themed opening sketch and a special interview with ghost hunters The Ghost Brothers, as well as an acknowledgement and a few Halloween-based jokes in the monologue, which house band Jon Batiste and Stay Human played out with Thriller.
Little Lunch: In "The Halloween Horror Story", the kids stage a play Melanie wrote about the true meaning of Halloween (which Melanie doesn't actually know), and Rory struggles with his fears about Atticus moving overseas.
Lizzie McGuire had one where Kate took control of organising a Halloween dance and insulted Miranda's Day of the Dead traditions, kicking off a plot where evil spirits decided to punish them for it but of course it turns out to be a prank to get back at Kate with Miranda's parents in costume.
MacGyver (1985): "The Secret of Parker House". The premiere of season 4, actually aired on Halloween 1988, has an opening scene with kids trick-or-treating, and a plot that involves a somewhat spooky mansion? All checked.
Even M*A*S*H was able to take time out from the horrors of war to indulge in some Halloween tomfoolery. In the episode "Trick or Treatment", the staff don costumes and share ghost stories, unaware that an apparently dead soldier outside is actually clinging to life. Fortunately, Father Mulcahy realizes the mistake just in time and the soldier is rushed into surgery to save him.
Malcolm in the Middle had two: the first sees the boys attempted to keep the classic spirit of Halloween alive after the actual holiday winds up disappointing them by engaging in an elaborate prank, while the other sees Hal becoming paranoid after learning that their house was previously home to a grisly murder while Reese and Dewey face the wrath of an old man they egg while trick-or-treating, leading him to chase them through the entire episode.
The third-ever episode of Marry Me: Annie and Jake hold a haunted house in defiance of their building's take charge helicopter parent and get in trouble when a boy refuses to leave; Dennah "eliminates the middleman" in her sexy whatever outfits and opts to "just go as a slut"; Gil and Kay go on an adult trick-or-treat that allows Gil to stalk his ex-wife.
Miami Vice has "Shadow in the Dark," which aired on Halloween of 1986. Crockett turns into The Profiler in order to catch a cat burgler, almost losing his mind in the process.
Just like Home Improvement, Roseanne, and the Simpsons, The Middle has annual Halloween episodes every year starting in its second season with plots such as Axl and his friends getting stuck offroad when they try to attend a Halloween party, Axl having to recover some kids' stolen candy, and Sue holding a seance.
In Power Rangers Zeo, the episode "It Came From Angel Grove" featured the surprise return of Lord Zedd and Rita, as Adam awoke on Halloween to find his friends and the rest of the town (including Zordon) transformed into a Universal Horror parody of itself - which in the end turns out to be All Just a Dream.
Power Rangers Samurai has "Party Monsters", an episode where all the previously slain monsters have a Halloween party in the afterlife, discussing their encounters with the Samurai Rangers and how they almost beat them. In short, it was just a Clip Show.
Samurai has now had a second: "Trickster Treat", which is not a clip show though it uses less original footage than "Party Monsters" did and that's not just talking Sentai footage.
Power Rangers Megaforce has "Raising Spirits", another clip show where the group goes to a Halloween party. The monster of the week looks in his crystal ball to see the past of the five teenagers with attitude, but keeps seeing the Power Rangers defeating monsters, not realizing that they are one in the same. Also there was a Megaforce Halloween safety PSA.
Power Rangers Dino Charge also has a Halloween clip show, "The Ghostest with the Mostest"; one of the Rangers is kidnapped and replaced, but because they were in identical costumes, no one (including the audience) knows who was taken. The clips are used as the Rangers answer questions about their past to prove their identities.
Dino Supercharge has "Trick or Trial" where the Rangers are put in a Kangaroo Court with charges pertaining to the monsters they've destroyed.
Power Rangers Ninja Steel has "Grave Robber", where the Rangers play a board game of the name by Cosmo's design, facing off against previously destroyed Galaxy Warriors contestants. Instead of being a clip show, the scenario helps to burn through Ninninger fight footage.
The Monk episode "Mr. Monk Goes Home Again" has Adrian Monk trying to recover several candy bars that were contaminated with poison (some of which were distributed to trick-or-treaters), which turns out be the work of some man who poisoned his wife and is trying to make her look like the random victim of a serial killer.
While it did air 1 day before Halloween Most Extreme Elimination Challenge pitted Real Monsters and Advertising Mascots against each other (At least on the Broadcast version).
Mulaney: "Halloween." Featuring a dead man's apartment, plenty of costumes, and a mean boss who likes firing people on Halloween.
Naturally, Sadie has "Ghouls Just Want to Have Fun", which doubles as a Bizarro Episode as it resembles nothing else in the show's run. Fans still debate if it is supposed to be in continuity or not.
NCIS has something of a tradition of these, with "Witch Hunt", "Murder 2.0", "Code of Conduct", "Cracked", "Oil & Water", "Parental Guidance Suggested", "Viral", "Shell Game", and "Beneath the Surface" all having the holiday as a backdrop.
Ned's Declassified School Survival Guide had a two part Halloween episode, the first part dealt with the annual party at the school. The second was a dream induced by a sugar crash in which Ned was a vampire who was having trouble passing his "turning into a bat" exam, Cookie was a werewolf looking for a transformation trigger to chase off Franken-Loomer, and Moze was a ghost looking to kill someone because she was the only ghost at school.
The New Adventures of Beans Baxter has "A Nightmare on Beans' Street", where Beans and his friends are set upon by a deadly pumpkin sent by UGLI's leader, Mr. Sue, and the Pumpkin Princess.
Newhart had a Halloween episode in which all the residents of Stratford (except Dick Loudon, natch) become convinced that an alien invasion is imminent.
Nicky, Ricky, Dicky, and Dawn: The episode "Scaredy Dance" is all about the kids' first Halloween dance, a high-school style dance with embarrassing secrets and all.
Night Court had several Halloween episodes, including one where resident Jerkass Dan cheerfully "sells his soul" to a man in a devil costume, who then reveals a worrying amount of detailed knowledge about Dan's life and crimes. It turns out it's an elaborate practical joke.
There's also one where Harry has a defendant locked up for contempt after he claims to be Death... and people mysteriously stop dying.
The Office (NBC series) has had three episodes set on Halloween. The first episode had Michael having to fire an employee (he had waited until Halloween because firing employee is a scary thought for him). The second had Dwight, Kevin and Creed all dressed as Heath Ledger's version of The Joker. The third had everybody competing in a costume contest to win a coupon book.
"Greg Pikitis": While Leslie, Dave and Andy try to stop a high school kid from vandalizing a park, Ann has an awkward Halloween party with her hospital co-workers and the Parks Department staff as guests. The party only comes alive when Tom takes over.
"Meet and Greet": Andy and April have a Halloween party, but Ben is passively angry that they didn't consult him. Jerry is made uncomfortable by the behavior between his daughter Millicent and Chris.
"Halloween Surprise": Ron and Andy take Diane's daughters trick-or-treating. Leslie and Anne try to scare Tom, but they end up scaring Jerry instead, causing him to have a heart attack.
"Recall Vote": Leslie, upset because she lost the recall vote, ruins Halloween for children attending the Parks Department event. She and Ben get drunk and almost get a tattoo. April is depressed because Andy is out of town, and Halloween was always their thing. Chris tries to cheer her up.
The Pretender had an episode where Jarod discovered Halloween. At the end of the episode, he goes trick-or-treating dressed as the scariest thing he knows: Mr. Raines.
Punky Brewster had a Halloween episode in season two. She was dressed as a 50s girl in a poodle skirt.
The cartoon had the episode "Halloween Howlers." Glomer was turning everyone who didn't give him a treat into a jack o'lantern.
Pushing Daisies did a Halloween episode in their first season. The plot centered around the cast trying to track down a "ghost", and actually aired on October 31st. The second season episode didn't fall on the same date and wasn't about Halloween, but the show still managed to put its cast in costumes that week.
QI has had three: the series D episode "Death", the series G episode "Gothic" and the series H episode "Horrible".
Quantum Leap had a surprisingly spooky Mind Screw of a Halloween Episode. Sam jumps into a horror novelist living in Maine (who is totally not Stephen King) to whom really strange and creepy things are happening. Sam is seeing things nobody else does, people are dropping like flies, Al is behaving weirdly and Ziggy can't tell anyone anything. Then things get downright scary and Al goes from just acting strange to flat out evil. After he finally jumps again, Al appears and tells Sam that Ziggy hasn't been able to find or reach Sam since before his last jump and Al hasn't seen him since then either.note The episode has another layer of infamy add to it. From the very first time it aired back in 1990, weird events have been associated with this episode. This episode has the highest incidence of VCR / cable / local station failure than any other episode aired. There have been numerous reports of VCR?s cutting out during the taping of this episode, local station and cable companies dropping their signal. Even mentioning it by name is hazardous, as one net. Leaper can attest. He lost his job AND his net - hence QL fans usually refer to it as "The Halloween Episode" or "The B**giem*n".
On Reaper, the office that takes back captured souls is closed for the holiday. Also, the Devil hates Halloween because it's too commercialized and has become the one day when people don't believe in him.
Reba has one, in which Reba attempted to pull pranks on her family and to get her youngest child to get into the spirit of scaring people on the holiday.
Roseanne did one of these in each of its (pre-revival) seasons, a tradition that's extended to at least the first season of its later After ShowThe Conners.
Season 1: Sabrina's cousin Amanda is introduced when Sabrina has to attend a family gathering, and she sends a double to Harvey's Halloween party.
Season 2: Sabrina throws a Halloween party of her own with Other Realm termites and talking furniture in the house.
Season 3: Sabrina's great aunt gives her a present: a doll that locks down the house and summons monsters to scare Sabrina and her friends
Season 4: Sabrina gets attacked by zombies, or so it seems. When they finally get to her, all they do is dance to the tune of Larger Than Life (in what is obviously a parody/reference to Michael Jackson's Thriller music video).
Season 5: She throws another party, only this time without her aunts' permission, and it involves Roxie falling for Frankenstein
Season 6: Sabrina and her friends end up living a whodunnit murder game
Sam & Cat has the episode "#DollSitting", where Sam & Cat are placed in charge of babysitting a mysterious doll which seems to change location every time they see it. Also, Cat is having fun with a spell book and believing she has turned Dice into a monkey.
Season two of Scream: The TV Series ended with a two-part Halloween episode where, after the events of the prior two seasons, the surviving cast decide to head to Shallow Grove Island for a vacation. Two of them, Stavo and Noah, take the opportunity to research a local urban legend concerning a local Lizzie Borden-esque murderer named Anna Hobbs — just in time for people to start getting killed again.
Scrubs had a minor one in Season Two. The main plot was about J.D.'s brother, but the B-story was that some of the staff were in costume, and Cox and Kelso's annoyance at "this, the mother of all non-holidays".
seaQuest DSV first-season episode "Knight of Shadows" (aired 31 Oct 1993) has the crew of the eponymous submarine exploring a 100-year-old sunken liner—a haunted sunken liner...
In the Small Wonder episode "Haunted House" (1987), the Lawsons think a ghost has invaded their house after the electricity goes out, so they call a pair of bungling ghost hunters named Dickens and Fenster. No one seems to be aware that an electrified Vicki is responsible.
Starsky & Hutch has "The Vampire," in which a serial killer strangles women, then punctures their necks and steals some of their blood. Starsky reads books on vampires and buys garlic necklaces for himself and Hutch, who thinks the whole idea of vampires is ridiculous.
Star Trek: The Original Series episode "Catspaw". When Kirk, Spock and McCoy beam down to a planet they encounter witches, a wizard with a black cat familiar and a dungeon with Hollywood Torches and skeletons. Kirk says that it looks like someone is playing an elaborate trick or treat on them. The episode was first broadcast October 27, 1967.
Tales from the Darkside of course had a few usually involving some miser trying to ruin the Holiday for everyone. One ep focused on a debt collector who made a tradition of running a spooky house (basically just things rigged to scare people) and having those that owe him money have their kids go inside and search for the receipts. If they found it, the debts would be cleared. Course the collecter would do his best to scare the kids away before they could. However one particular Halloween, real monsters come to pay a visit and well..you can imagine what happens.
According to a newspaper snippet, The Television Ghost's Halloween episode gave the titular ghost "free rein of the visual studios," allowing him to show off some simple special effects and Camera Tricks.
They had another where the gang visits their old and run-down elementary school, with Fez dressed as none other then 1960's Batman.
That's So Raven features a Halloween episode where Raven and Chelsea use a wishing spell to get invited to a Halloween party, but backfires and turns them into cows.
The Thundermans has the episode "Happy Heroween". When a thunderstrom trap the family inside on Halloween night, Collaso entertains the family by telling scary stories.
The Twilight Zone (1959) being an anthology series, didn't have a particular traditional Halloween Episode, instead it delivers The Grave, a western Ghost Story about a gun-for-hire who takes on a seemingly easy bet to visit the grave of his recently-deceased rival. Of course, being The Twilight Zone, he gets more than what he bargained for.
"Two Guys, a Girl and a Psycho Halloween": A psycho killer that looks like Berg is killing off the main characters one-by-one. Turns out to be Mimi in disguise, trying to get her own show... and all the pizza she can eat.
"Halloween 2: Mind Over Body": A mad scientist switches Pete and Ashley's brains and then Berg and Sharon's. Hilarity Ensues.
"The Satanic Curses": Jealous of their status as True Companions, Irene summons Satanic powers to curse Berg, Pete and Sharon. Berg becomes increasingly deformed, Pete grows Ashley's head on his shoulder and Sharon grows a penis.
Ugly Betty had one in its first season, where Betty's idea of celebrating is to dress up as a butterfly for what is supposed to be a costume party at work. Betty shows up in her outfit... only to find out that there is no costume party (it appears Marc made a series of prank e-mails).
Ultraman Tiga episode 8, "On Halloween Night", where GUTS investigates strange phenomena related to mass disappearances of children and find a dream-eating alien witch named Gilanbo to be the culprit. It is a typical Halloween episode, with the cast in costumes, kids trick-or-treating, and a Halloween-themed Monster of the Week, except that the series is from Japan, where Halloween was rarely celebrated. The episode specifically mentions that the town in question celebrates it and that it may someday be celebrated all over Japan. They turned out to be correct; the popularity of Halloween in Japan has drastically increased since 1996.
Ultraman R/B follows up twenty-two years later in its 17th episode, "Everyone is Friends", where the Minato brothers' sister Asahi encounters a group of aliens organizing what she believes to be a Halloween party (in actuality, a preparation to welcome their leader) and while they do generously let her join the festivities, they don't want any Ultras showing up.
In a season three episode of Veronica Mars, Logan and Veronica go to a Halloween party dressed as Jack and Meg White of the White Stripes. Their costumes, however, are pretty lame.
What I Like About You did Halloween episodes in its third and fourth seasons. Interestingly, in the third season, only Holly's circle dressed up, while in the fourth, only Val's circle did.
Wheel of Fortune includes Halloween week as one of their recurring themes. The episodes on Halloween week often have fog, thunder and lightning effects, animatronics, and spooky sound effects as part of the usual Scenery Porn.