Unfortunately, most of the animated shorts made during The Silent Age of Animation have become lost films due to many factors, including carelessness with the source materials, the films simply deteriorating due to age, and in some cases, the cartoons being deliberately destroyed. And even for shorts that still exist in some form, even fewer still exist in their original form.
The bulk of the Krazy Kat Silent shorts were destroyed circa the 1940s when storing them became too expensive and troublesome for Winkler.
Winsor McCay's films as they are today only exist in dupe prints, as the originals had long since deteriorated.
Paul Terry's very first cartoon, "Little Herman" (1915) is probably lost too (the only evidence it even existed was an illustration and mention of it in the old Nat Falk's "How to Make Animated Cartoons" book), although this is not the case with his second film, which was the debut of Farmer Al Falfa—unfortunately, many of his silent Aesop's Fables have been lost.
Even big series like Felix the Cat and the silent Disneys aren't immune to this; only a third of Felix's silent filmography still survives, many of the Alice Comedies are still missing, and only 16 of Disney's 26 Oswald the Lucky Rabbit shorts survive, and in the latter's case, Universal did not properly care for the negatives, so reissued prints and dupes (many of which had scenes rearranged or removed altogether) had to be used in lieu - ironically, this is not the case with the Newman Laugh O Grams, as all of them have managed to survive.
The Newlyweds cartoon series by pioneer Emile Cohl, considered the first animated adaptation of a comic strip, is all but completely lost forever, save for one duplicated short, due to a lab fire destroying all of the original negatives.
In the worst case scenario, entire series and several important films have become completely lost altogether, such as the very first full color cartoon, "The Debut of Thomas Cat".
While The Golden Age of Animation doesn't have it anywhere near as bad as the films of the silent era, there's still some problems with it occasionally popping up. The good news is that the bulk of the publicly screened theatrical cartoons of the day still exist in some form, and several companies such as Disney, MGM, Warner Bros. and even the Columbia Cartoon library have had their libraries restored, with only a handful if any flat out missing episodes (tragically, their handful of Barney Google shorts were deliberately destroyed due to a contractual obligation with King Features—only snippets of silent b&w dupes of one of the films is known to exist). Even the Van Beuren studio and Terry Toons have virtually all of their sound films still existing in some way. The bad news is that this is definitely not the case with industrial films and commercials of the era, such as the films of the Jam Handy Studio and the shorts of the army based First Motion Picture Unit. On that note, many of the big studio cartoons have had their original titles removed in reissues, even having new titles spliced into the original negatives—this is the case with many of the Betty Boop and Looney Tunes shorts.
The Family Guy episode "Turban Cowboy" was pulled from FOX and Hulu after the Boston Marathon bombings that happened three weeks later. The main plot was about Peter converting to Islam as part of a terrorist plot and there was a cutaway of Peter driving drunk through a marathon, which only made things worse (especially when someone created a YouTube video that proved that Seth MacFarlane somehow predicted this would happen). MacFarlane has gone on record to say that, much like "Not All Dogs Go To Heaven," he regrets making this episode. Despite the backlash, the episode has made a comeback in syndication, mostly on TBS and [adult swim], and is on Netflix.
"When You Wish Upon a Weinstein": Banned for potentially being offensive to Jews and Catholics, though MacFarlane and his crew actually brought in a rabbi to make sure the episode was "kosher," and, despite FOX's decision to pull the episode, it was released on the volume three DVD and when news hit that Family Guy was coming back with new episodes, this episode did air, but with some alterationsnote Peter's "Even though they killed my Lord" line in his song "I Need a Jew" was changed to "I don't think they killed my Lord" and Quagmire "looking for his keys" in front of Lois was shortened so it wouldn't look like masturbation.
"Partial Terms of Endearment": Banned for references to abortion, even though the episode is actually very even-handed on the subject and doesn't do a lot of bashing on people who are for or against it. It was most likely cut because FOX feared that people would write in and complain (as is the case with a lot of TV shows with controversial stories or series premises — and this fear also affects advertisers as much as Moral Guardians). The episode also isn't shown on Adult Swim, TBS, or Netflix streaming, but has aired overseas on BBC3 (with some parts cut for time and content) and is available uncut and uncensored as a standalone DVD release (see the Banned Episode trope page for what it looks like).
The Very Special Episode "Screams of Silence: The Story of Brenda Q." only aired once on FOX, probably due to its realistic depiction of Domestic Abuse, but it can be seen on cable syndication and on Netflix.
Disney Channel and Disney XD no longer show an episode of Phineas and Ferb called "Ready for the Bettys" because a real-life band named The Bettys thought the episode was about them. The similarity was in name only as the styles of the two all-girl bands was different. As most half-hours of the series contain two episodes, "The Flying Fishmonger" is also out of rotation because it was paired with the episode. The episode remains on iTunes and Netflix.
Batman: The Animated Series had a short pitch reel titled "The Dark Knight's First Knight" that was presented to FOX before production of the series formally began. It was never broadcast and left unseen for over twelve years until it was released on DVD as a bonus feature. Unfortunately, the original audio track was lost and dubbed over by the series' main theme.
Due to the studio making more episodes than the network had ordered, four King of the Hill episodes past the Grand Finale (the episode where Hank discover's Bobby's talent for identifying meat cuts and pointing out their flaws) were not in the network run and were only seen in syndication (including [adult swim]). The four episodes are:
"The Honeymooners": Hank's mom breaks up with her Jewish boyfriend — from the Christmas Episode where Hank goes blind after seeing his mom and her first boyfriend have sex — and plans to marry a man she just met and live in an RV.
"Bill Gathers Moss": Bill takes in Principal Moss, who has been living in the school following his divorce, and an ex-Playboy centerfold as a roommate, after watching a sitcom about two roommates who get into wacky adventures. Unfortunately for Bill, Moss hooks up with the Playmate and they effectively strip Bill of any say of what is allowed and not allowed in the house and allow the Playmate's Russian counterfeiter boyfriend set up shop inside their home..
"When Joseph Met Lori, and Made Out with Her in the Janitor's Closet": Joseph starts dating a girl named Lori and the relationship quickly turns physical, and Dale, who refuses to talk to his son about sex, checks into a mental hospital for dementia. The episode's B-Story has Nancy and a coworker at her news station waging war with each other to find a human interest angle they can exploit for more airtime.
"Just Another Manic Kahn-Day" Hank convinces Kahn to stop picking up his medicine at the pharmacy — only to learn when they hire Kahn to build a barbecue that Kahn is a manic-depressive and needs his medication to level him out, but Hank doesn't want Kahn to lose his manic energy to make the barbecue. Meanwhile Bobby tries to find the humor in a "Ray J. Johnson" comedy record that Peggy, Dale, Bill, and Boomhauer claim is funny.
The Simpsons actually did have a lost episode that was aired only once in September 1995 called "Springfield’s Most Wanted". It aired between a rerun of the season six finale "Who Shot Mr. Burns Part One" and the debut of the season seven premiere, "Who Shot Mr. Burns, Part Two". This episode was mainly a Clip Show with live action segments hosted by John Walsh, and had guest apperences by Los Angeles police chief Daryl Gates, Dennis Franz, Courtney Thorne-Smith, Kevin Nealon, Chris Elliott and Andrew Shue. Since this episode was connected to the "Who Shot Mr. Burns" contest, this episode only aired once on Fox (but it was shown more than once on Sky One in the UK). It can now be seen on the season six DVD set.
In an attempt to prevent controversy from Japanese viewers, Fox never aired the episode "Thirty Minutes over Tokyo" in Japan or put it on the season 10 DVD set due to scenes that mock Japanese culture and society (The Simpsons having a seizure while watching a robot anime, Homer tossing the Japanese emperor into a sumo thongs Dumpster, and The Simpsons appearing on a sadistic Japanese game show). Which is just as well, since there is a gag relying on Homer saying a full sentence in Japanese, which is subtitled as simply, "D'oh!"
Season 13's "Blame It on Lisa" was banned in Brazil for the same reasons why Japan banned "Thirty Minutes Over Tokyo" (stereotypical depiction of the country).
The Beavis And Butthead third-season opener "Comedians" featured Beavis trying to juggle flaming newspapers and burning down a comedy club. Because it aired only a month before the Ohio mobile home fire that Beavis and Butt-Head were blamed for, this episode was swiftly pulled out of rotation and later heavily censored.
Other Beavis and Butt-Head episodes were banned or heavily censored for instances of Beavis saying "Fire! Fire!" or flicking a lighter ("Stewart's House", "Kidnapped"), animal cruelty ("Frog Baseball", "Washing the Dog"), inhalant and drug abuse ("Home Improvement", "Way Down Mexico Way") or anything that might be considered poor taste in the aftermath of Columbine and September 11th ("Heroes", "Incognito"). Many of these episodes have aired on Viacom-owned networks overseas unedited.
There's also the music video segments. Who knows how many of them have been lost forever due to copyright issues? Fortunately, some of the rights have been secured, and over three dozen music videos have made it to the various Mike Judge collections.
Dialogue was recorded for The Angry Beavers series finale titled "Bye Bye Beavers", but it was never finished or aired, as per a rule stating that Nickelodeon series finales should not have self-referential humor about the series' end. (Supposedly, Nick considered breaking the rules for it, but ultimately left it unfinished due to the fact that the episode ended with the Beavers going to Cartoon Heaven, which was thought to be too sad for kids.) It was supposed to be paired with an episode called "A Tale of Two Rangers", of which no trace exists.
Supposedly there are a number of Minerva Mink shorts from Animaniacs that never got released due to excessively risqué content, though given the content of the only two Minerva Mink shorts that did air, one has to wonder exactly why the network let those through.
A lesser example of a missing segment: Episode #55 has a wraparound that, for some reason, isn't on the DVD or on contemporary TV airings.
Ed, Edd n Eddy has three of these. According to an interview with the show's creator, an episode titled "Special Ed" was produced but never completed, due to content he deemed "too real" for the series. Not much else is known about it other than the fact that it might have been an episode that focused on Ed. What became of two season five episodes, "Luck Be an Ed Tonight" and "A Room and an Ed", however, is unknown. The episodes may have been left unaired, or possibly never made. More information can be found here.
For a long time The Other Wiki couldn't acknowledge the finale film Ed, Edd n Eddy's Big Picture Show as actually being real as no publicity had been put out for it until it finally aired in November 2009 on the American network.
Also, three episodes are missing from Central European countries including Romania, Poland and Hungary: "The Ed-Touchables", "Pop Goes the Ed" and "Momma's Little Ed".
On Cartoon Network and Boomerang feeds avalaible in Eastern and Central European countries, the post-1948 Looney Tunes shorts are not shown because the channels only have the rights to the pre-1948 ones.
After Time Squad was canceled soon after being renewed for its second season in early 2002, a few episodes were held back/misplaced from the Cartoon Network line up for a while for unknown reasons, including "Whitehouse Weirdness", an episode that parodied a Scooby Doo mystery, complete with the very same music and sounds from the original 1969 series note (some blame the stringent censorship after September 11th at the time which toned down a lot of mockery of the President and U.S. officials, though the real reason could have been legal issues with using Scooby-Doo as a parody or show creator Dave Wasson having a falling out with his production crew and Cartoon Network subsequently firing him). The finale was presumably "Nobel Peace Surprise", in the summer of 2002, with five more episodes seemingly stuck in limbo until the spring of 2003. Four of the said episodes eventually aired within the course of two months, with one episode held back all the way into November of that year. Incidentally, two of the episodes that aired in spring of 2003 were "Day of the Larrys" and "Ex Marks the Spot," which put the show's already-high Ho Yay count over the top. The real finale "Orphan Substitute" (and the preceding cartoon, "Floral Patton") didn't air until November 2003, due to unfounded fear that viewers would complain about the show mocking then-U.S. President George W. Bush. These extra episodes were most likely aired due to Cartoon Network wanting to get rid of the series as quickly as possible.
Several episodes of Davey and Goliath were presumed destroyed by the Evangelical Lutheran Church in America, the successor to the church that commissioned the series, due to material that today's mainline denominations would consider unfit for airing on a children's program (such as racial stereotypes and sexism). They were later found, re-edited and released on DVD.
The original broadcast masters for episodes of Scooby-Doo, Where Are You! are long lost. The only episode whose master survived destruction was "Go Away Ghost Ship", and that version of the episode continues to air on Boomerang and is available on DVD. All other episodes were remastered from other prints.
Two highly anticipated second season episodes of The Boondocks never aired on TV in the US, due to legal threats from various people associated with the BET Network (which was a major target of the two episodes: one where Huey protests over BET's programming by going on a hunger strike and the Sequel Episode in which Uncle Ruckus gets his own reality show and discovers through a DNA test that he is African-American, and not a white man with "reverse vitiligo"). They were released on DVD and iTtunes, but there's still no word on if they will ever see the light of day on [adult swim]. Now that the show is canceled, the answer is a resounding, "No."
The Boondocks started life as a comic strip that ran in a college newspaper known as "The Diamondback". This version of the series has never been seen anywhere else, and even the nationally syndicated version of the comic has a lot of strips that stillhaven't been collected into trade paperbacks.
Season 4 may very well be turning into a Missing Season, as [adult swim] has skipped over it in the rotation every time since the premiere of the last episode. Not that anybody would complain...
The original pilot for the sadly short-lived Father of the Pride never aired on the NBC run, and even failed to appear on the DVD release. It eventually popped up on Sky One in the UK. In addition to the pilot, three other episodes were produced but left unaired due to NBC's decision to cancel the series. One of them, like the pilot, ended up on Sky One in the UK.
The Ren & Stimpy Show rolled out its own "Missing Episode" just after the end of the show's first run, though this may have been nothing more than a publicity stunt. The countless episodes yanked after one showing would be more serious. (Remember Mr. Horse's presidential bid? Yeah, neither do we.)
A legitimate lost episode, entitled "Man's Best Friend", would have aired in 1992, but did not, due to an incredibly violent scene in which Ren beats his and Stimpy's new owner, George Liquor, within an inch of his life with an oar. It did not air in the United States until Spike TV aired it as part of the Ren & Stimpy Adult Party Cartoon series in 2003.
Adult Party Cartoon itself suffered an early cancellation as a result of this, at least nine episodes were planned, but due to unmet deadlines, the show was pulled and only six episodes were made, three of which weren't shown at all outside DVD releases. Out of the three unfinished episodes, at least one, "Life Sucks", was storyboarded and voice recorded.
Here's a missing segment of an episode: the Schoolhouse Rock episode "Science Rock" reaired in 1979 and was supposed to air a segment titled "The Greatest Show on Earth", which weather was its main subject. Before the episode aired, the Ringling Bros.-Barnum and Bailey Circus Company objected to using the trademarked name as its title. As a result, ABC left this segment off the episode and also did not include it in the 1995 Science Rock VHS, either. It finally made its first appearance in the 30th Anniversary DVD under the name "Weather Show", but the references to the title were awkwardly and obviously edited.
The animated adaptation of The Mask only aired seasons one and three on CBS. An entire season of episodes (one of which is the infamous "Flight as a Feather" episode) didn't air on CBS, but did find a home in syndication and on overseas Cartoon Network channels.
The episode "Mass Transit Trouble", much of which revolves around a terrorist plot by Dr. Robotnik to destroy the Mobius transportation system with time bombs placed in various locations, was withdrawn from syndication following the Oklahoma City bombing and was never released on VHS, due to the similarities between the plot and the bombing itself. Eventually, Toon Disney picked up the episode and reran it for quite a while, then was pulled again (and yanked off any future DVD releases until 2008) after 9/11 for the same reasons. It was not available anywhere until Shout! Factory released the episode on the "Volume 2" DVD and has now been allowed to rerun again.
Rumor has it that the episode was close to not being produced at all, thanks to verysimilarevents during production of the episode. Somehow they finished the episode and aired it anyway, and surprisingly to no controversy.
For years there were rumors circulating that the original pilot episode of the show existed somewhere. A workprint of the halfway-completed pilot episode featuring the character dialogue albeit lacking sound effects and music was screened by DIC to representatives of ABC when the concept was pitched to the network, who ultimately turned it down and requested DIC come up with another concept. While the original concept ended up becoming Adventures of Sonic the Hedgehog and was placed into syndication, the pilot itself was never finished, with parts of the pilot recycled for later episodes (including a notable part where Dr. Robotnik tries to crush Sonic with a giant weight, which was used as the series' closing credits). Nobody could manage to find the workprint for years until it eventually appeared on the internet, courtesy of lead animator Milton Knight, and was uploaded on YouTube.
The episodes "Inside Job" and "Conspiracy" were removed from circulation after 9/11, as both episodes dealt with assassination plots against ambassadors by a group of Anti-Galactic Alliance terrorists.
Tiny Toon Adventures had two: "Elephant Issues" had the final short of Buster, Plucky, and Hamton getting drunk off one beer, stealing a car while intoxicated, and ultimately killing themselves. It was last seen on the Fox run of the series and subsequently banned from rotation on The WB, Nickelodeon and Nicktoons. The other episode, "Toons From the Crypt" was initially rejected by the Fox broadcast standards and pratices due to the final short, which ended with Elmyra digging up the corpses of her dead pets. This short was eventually released on home video and the full episode was eventually allowed to air during reruns on Nickelodeon, while "Elephant Issues" appeared on the third volume DVD.
These episodes eventually aired again when The Hub aired the show in reruns.
The "Spring Break Special" aired only once on Fox in March 1994 and was never seen on TV again for reasons unknown. It finally aired again two decades later on Hub Network for Easter 2014.
Dexter's Laboratory had the episode "Rude Removal" where Deedee and Dexter go into a machine that removes all of their rudeness and concentrates it into another version of themselves. This episode was removed for gratuitous swearing and rude gestures such as mooning and middle fingers. It's something of an oddball - they had only meant to show it off in conventions and the like as it never really was meant to be seen on TV. However, [adult swim] was able to convince them to finally air it in some manner. According to Word of God, it was intended to be part of the show's second season but Cartoon Network didn't approve of it.
Thomas the Tank Engine has had a couple of sort-of instances of this. Based on a single photo, a rumour had been going around that a story called 'The Missing Coach' was filmed but never aired. This was dismissed as speculation until Word of God from the technical crew confirmed that it had been half-filmed. The episode would have aired as the 15th episode of Season 2, but showrunner Britt Allcroft felt that the plot point where Donald and Douglas switch tenders would be too confusing for little kids. The other was a number of episodes of a proposed spin-off called Jack and the Pack that didn't get picked up and which were eventually released three years later on DVD as part of the regular series. The rest of the episodes planned for the spin-off went unmade, and with them, a few characters never saw the light of day.
"Little Accidents"; formerly known as "Pingu's Lavatory Story", was banned from airing in the U.S. due to its blatant depiction of Potty Failure in many scenes, and it was deemed impossible to edit the offending scenes without changing the plot. It continues to rerun elsewhere, including, in the UK, on The BBC.
The pilot episode as well as "Pingu Dreams" have not been seen on the BBC since 2003. Although the former's reason for pulling is unknown (possibly for a distressing scene where Pingu's head is treated like a bouncing ball by a bully), the latter was pulled over the horrifying appearance of the leopard seal that invades Pingu's dream later on in the episode. Pulled for similar reasons two years later was "Pingu Runs Away", where Pingu encounters ice sculptures depicted as freakish monsters after he runs away from home. The appearance of the sculptures were deemed to be too risque for children.
None of these episodes have been shown in the U.S. as of 2005.
"Pingu and the Doll" was banned in the U.S. and Canada thanks to scenes where Pingu dresses up as a Native American and attempts to intimidate one. Europe doesn't seem to have a problem airing it, though.
The Italian dub of My Little Pony: Friendship Is Magic is missing the episode "The Super Speedy Cider Squeezy 6000" for unknown reasons. There is proof that the episode has been dubbed (Flim and Flam's VA is listed in the Italian Season 2 credits), but the episode itself never aired. Many people think that it was because of references to alcoholism, but other references to cider in the series (like when Rarity dreams about cider in Sisterhooves Social) are actually kept. Most people think that it will be aired in Season 3, or included in the DVD boxsets as a "Lost Episode".
In the Latin American dub, the 11th episode of the second season "Family Appreciation Day" was missing during Discovery Kids' premieres of other season 2 episodes. In fact, it didn't air until October 2013 (although it was made available on the Latin American Netflix a few weeks before it aired on Discovery Kids), after all of season 2 and Season 3 had premiered, and has been rarely re-aired for unknown reasons.
A weird case of this trope is that the episodes "Luna Eclipsed" and "Hearth's Warming Eve" are skipped when The Hub reruns the series, despite important world-building happening in both of them. This is because they are holiday episodes, so The Hub will only show them once at those times of the year (if they are shown at all). Considering how much of the schedule this show takes up, those two episodes will only air about one-twentieth as often as any other episode. It also means these episodes have only aired twice each since they premiered. (Oddly, "Hearts and Hooves Day" is not taken out of the rerun schedules despite it being a Valentine's Day episode and bearing far less importance to the series overall than either of the former two.)
South Park: Happened to the two-parter episode "200" and "201". The episode "200" aired in rotation for a week before being pulled due to Parker and Stone violating a ban on usage of Mohammed/episodes based around a series of racist cartoons featuring Mohammed and "201" only aired once, with no reruns or repeats due to the two continuing the plot thread over Comedy Central's direct orders. While both episodes were released on DVD in the US (other countries did not get them or even see them), "201" is the heavily edited TV version which Comedy Central edited over Parker and Stone's objection, censoring every mention of Mohammad's name as well as the episode's moral advocating the use of violence and terrorism to get your way.
Furthermore, while the episodes are available on DVD, they are not available for legal stream. Parker and Stone refused to allow the censored version of "201" to be streamed (having basically disowned the episode and including a disclaimer at the start of the episode, where they basically state that the episode was censored by Comedy Central and not a running joke the two came up with to mock the controversy over "200", like many had assumed it was at first) and as such, both episodes are not available on the South Park Studio website or on any other legal streaming website.
This is not the first time episodes have been banned: "Not Without My Anus" and "Pip" were removed from rotation by Comedy Central for being filler episodes while "Jared Has Aides" and "Death" were both banned by the network for several years due to content ("Jared Has Aides" for child abuse humor that offended Comedy Central, "Death" for the episode's final scene where the kids decide to become drug addicts when they find their favorite TV show banned). However unlike 200 and 201, the bans were ultimately lifted and were in regular rotation when the show was officially went into syndication.
The creation of a syndication package also led to more bannings due to certain episodes being too dirty for syndication or Parker and Stone refusing to allow them to be edited on the grounds of damaging the themes of the episode. "It Hits The Fan" (which is the one where they all say "shit") and "Major Boobage" in particular will not show up on local channels that show South Park anytime soon.
The episodes "200" and "201" also pointed out that the earlier episode "The Super Best Friends" visually portrayed Mohammed without getting in trouble. Following the backlash of "200" and "201," "The Super Best Friends" was retroactively banned (though the season five DVD made before the Mohammad debacle has the episode as it used to be).
Regular Show's first season episode "The Unicorns Have Got to Go" has never been shown in several Eastern and Central European countries, such as Poland, Hungary and Romania. The reason for its exclusion is unknown.
It has also been rarely aired in the U.S., though the reasoning behind it could be because of the crude humor that was a little too [adult swim] for Cartoon Network (Mordecai drinking "unicorn slop," the unicorns pissing on the lawn, and the unicorns farting in Rigby's face). It was later included on The Complete First and Second Seasons DVD.
Likewise, the Halloween specials have also been ignored in those regions, up until the 2014 Halloween season.
There is another episode called "Insane in the Membrane" that never aired on FOX and still has not aired in the US (though it was available on DVD and shown on the former 4KidsTV site). It involves Baxter Stockman cloning his old body and inserting his brain inside. It goes fine for a while but after a few months he begins to fall apart and constantly tries new ways to fix himself including chopping off limbs. Eventually he loses his mind and blames April for all that has happened to him. To be fair, the episode was quite disturbing for kids.
Averted with "Nightmares Recycled", one of the episodes in the Lost Season, which was never completed due to similarly disturbing content. It apparently would've revealed that Hun and minor villain the Garbageman were conjoined twins crudely separated at birth, with the Garbageman later being thrown in a dumpster.
Captain N: The Game Master had episode #27, "When Mother Brain Rules", missing from "The Complete Series" DVD set because DiC Entertainment did not provide the master tape to Shout! Factory. Given the fact that it was merely a Clip Show, this move may be justified.
"How's Bayou" was never finished when it first aired on NBC, due to time constraints. It was later replaced with a second, more common version shown on the Family Channel, with some original dialogue replaced. Surprisingly, only the original version was released on DVD, so in a twist of irony, the second version is now the one considered lost.
Two final season episodes of Class of 3000 were left unaired from the broadcast order. They are not yet available on DVD.
Although the thirteen episodes of the 1975 BBC animated series Bod are still readily available, its companion series, Alberto Frog and his Amazing Animal Band, was not so fortunate. A victim of the 1993 children's television purge (see Live-Action TV for details), only five episodes of the original thirteen are known to survive; they were released on the Bod DVD collection in 2004.
An episode of 101 Dalmatians: The Series, "Alive 'n Chicken" was pulled from broadcast after 9/11 (it's sometimes shown outside the United States), due to a scene where Spot crashes her airplane into a windmill. "Prima Doggy" was also pulled, but that was only because it was paired with "Alive 'n Chicken", and just airing "Prima Doggy" wouldn't fill 30 minutes on its own.
The SpongeBob SquarePants episode "Gary Takes a Bath" didn't air until July 2003, even though the episode it was paired with ("Shanghaied") aired in March 2001. This is because "Shanghaied" was originally a half-hour special where the viewers would call in and vote for one of the three alternative endings. It didn't reair until July 2003, with "Gary Takes a Bath" replacing the seven minutes of deleted scenes. The uncut episode can only be viewed on the First 100 Episodes DVD. Both of these episodes were banned in the UK because of the perceived high scare factor of "Shanghaied". Granted, it's rather tame, but it was still a lost episode there for a long time.
"Goo Goo Gas", a season five episode, didn't air until 8 months after the rest of the season. This is possibly because its partner episode "Le Big Switch" didn't air very commonly because of... well, Nick being paranoid over "gay" stuff.
"The Sponge Who Could Fly" parodies this, and it actually does an okay job of seeming real since it's only aired once every 4 years or so.
The ChalkZone episode "The Smooch" is missing from the show's complete series DVD set on Amazon due to music rights. The Baha Men's cover of "Coconut" was prominently featured at the end of the episode, and it was too important to mute/edit out. The DVD contains the other episode and the music video it was paired up with originally ("Power Play" and "All The Way to The Top") at least; the iTunes episode collections didn't include any part of the half hour at all. The full episode did remain in the show's rerun rotation until 2013 (when Nicktoons took ChalkZone off the schedule).
House of Mouse was known for reusing many segments from the previous show Mickey MouseWorks as well as having some MouseWorks shorts make their debut in House of Mouse, but two MouseWorks shorts were never recycled as House of Mouse segments: "Minnie Takes Care of Pluto" due to being a Banned Episode for having Pluto think that Minnie wants to kill him and dreaming that he is in Hell, and "Pluto gets the Paper: Vending Machine", which was omitted for unknown reasons.
Two episodes from the first two seasons of Robot Chicken, "Adultizzle Swizzle" and "Blankets in a Pig", are edited versions of two previous episodes, "The Sack" and "Veggies for Sloth" respectively. Both have sketches deleted and replaced with new ones, such as a removal of a sketch from the latter crossing over Archie and Final Destination, due to copyright issues. Neither edit of the episodes are included on the DVD releases for those seasons. Interestingly, the original version of "Veggies for Sloth" usually plays as part of [adult swim]'s normal rotation, and not the edit, but both versions of "The Sack" seem to be absent. However, "Adultizzle Swizzle", the edited version, did get one airing on February 14th, 2015.
A sketch from the episode "Vegetable Fun Fest", which features Beavis and Butt-Head joining the Teen Titans, was removed from the Season 1 DVD set, and has not been included on any home media release to this day, due to copyright issues of its own. However, the episode with the sketch airs normally on [as].