Designated Villain: Margaret in the film doesnt really do much wrong aside from complain about a nickname, reject advances, have sex with Frank and write one letter about the camp. The shower scene happens because the guys just wanted to see if she was a real blonde or not.
Hilarious in Hindsight: Its pretty funny watching Painless asking movie-Hawkeye wouldnt he be upset if he turned gay, knowing that TV-Hawkeye flirts with anyone that has a pulse.
Retroactive Recognition: Sylvester Stallone says he was an extra in the film. One fan tentatively identified him as playing a soldier wearing a beret in the mess tent when Hawkeye and Duke first arrive at the 4077th, but he's only onscreen for a couple seconds and we can't see his face.
Adaptation Displacement: Most are aware that it's based on the 1970 film, but how many fans know of the novel that inspired the film?
There is also debate about how sympathetic or unsympathetic we are supposed to feel towards Frank. Is he just a stupid Jerkass? Or a Jerkass Woobie who, as much of a pain in the ass as he could be, nevertheless did not deserve to be bullied and tortured the way he was? A doctor who was cracking under pressure (Henry Blake described him as "a fair but competent" doctor in season one, suggesting that Frank wasn't necessarily a bad surgeon but merely an inferior one when compared to Hawkeye and Trapper, and later B.J.)? Or, a demented, deeply disturbed sociopathic Manchild who was actually dangerous (recall the time he tried to get Hawkeye hanged, and his many failures at gun safety)? Perhaps all of the above?
Pre-Flanderization, some episodes actually seem to portray Frank as the Only Sane Man (albeit a Jerkass version of one) at the 4077, given that he is the only one who actually acts like they are all in a war zone three miles from the front lines. Everyone else seems to think they are on vacation between OR sessions. If you watch the first five seasons with your focus on Frank, the show tells the tale of a man who is pushed over the Despair Event Horizon by his asshole roommates and eventually snaps when... the woman he's cheating on his wife with marries another man. Okay, he comes off as a Jerkass no matter how you slice it, unless you willfully ignore facts.
Radar started off deceptively innocent but sneakier and more worldly than he let on, and he was not above stealing Col. Blake's cigars and brandy from time to time, then he seemed to get more childlike and naive as the show progressed, especially after Col. Potter came in and replaced Col. Blake as Radar's father figure and CO. It's actually debatable if Radar truly regressed or if he simply cleaned up his behavior because he knew the more stern Col. Potter wouldn't tolerate the kind of shenanigans Col. Blake overlooked.
Americans Hate Tingle: The show is very much not popular in South Korea, where it's derided for portraying their country as a primitive hellhole, mixing up Korea and Vietnam, and being generally culturally insensitive.
Author's Saving Throw: Whatever the starting intentions with Hawkeye, his early season bi references were more along the lines of I molest men too. Compare that with the later season constant references to queer authors and the finales loved as many of you as I could with happy reaction shots from both male and female characters.
Awesome Music: A special, more military version of the "Suicide Is Painless" theme was used for parts of "Bug Out", parts One and Two (Which, incidentally, was the series' first Cliffhanger episodes), including one point where the climax is hit during a shot of Potter and Houlihan on top of Sophie, Potter's horse. The music was never used for any other episode.
Badass Decay: Few fans remember that crazy CIA agent Colonel Flagg was a seriously dangerous character in his first appearance. He even breaks the cast Hawkeye put on his arm to increase his stay (it's suggested he crashed the helicopter and broke his arm himself just as an excuse to surveil the camp).
Base-Breaking Character: With the obvious exception of Frank Burns (whom fans and critics alike agree is a character we all love to hate), almost every other character is this for some fans out there:
B.J. probably gets hit with this the hardest out of all the characters, along with an element of Replacement Scrappy. While there's plenty of fans who prefer the arguably more well-rounded B.J. over the usually one-dimensional and constantly overshadowed Trapper, others feel that B.J. was the worst addition to the show, on the grounds that he spends too much time whining about being away from Peg and Erin. Then again, for a young man still in his twenties, fresh out of residency, to be torn away from the love of his life and his newborn daughter and thrown into a war he was barely prepared for, can you really blame him?
Radar probably gets more than his fair share as well (though nowhere near as B.J.), though he's split more down the middle. Although many people just adore Radar for his innocence, naivete, and willingness to help others, which has often been considered a breath of fresh air — not just for this show, but TV in general — many people also hate for those exact same reasons, seeing him more as a Cousin Oliver who grew more and more out of place with the shift in tone the series was taking (though, the show didn't really become too dramatic until the season he was discharged).
Klinger would qualify once he stopped wearing dresses, took over as company clerk for Radar, and pretty much turned into a regular guy, after spending a number of seasons running around in dresses and looking for other wild and Zany Schemes to get out of the Army. The debate is whether he's better as a regular clerk or wearing dresses to get discharged.
Hawkeye became the unofficial star of the show because of how popular he was with audiences, as helped by the chops and dedication from Alan Alda... though once Alda obtained more creative control of the show behind-the-scenes, and many facets of Hawkeye's personality (drinking, nurse chasing, wisecracking, scheming and plotting against Frank and later Charles, and just acting silly in general) were reduced tremendously, then fans weren't so fond of him.
Better on DVD: The general consensus. While there isn't much continuity to screw up, some stations tend to cut up episodes for time, or not air certain episodes for some reason or another. The DVD also gives the viewer the option of watching it without the Canned Laughter.
Big-Lipped Alligator Moment: Loudon Wainwright III as Captain Calvin Spauldingnote Shout-Out to Groucho Marx's "Captain Spaulding", no doubt, singing Oh, Tokyo" in "Rainbow Bridge". The entire episode he sings about how great Tokyo is and seemingly serves only to remind the audience Hawkeye and Trapper had weekend passes. He never even interacts with any characters. He does, though, when he returns in "Big Mac" to sing a special song about Gen. Douglas MacArthur, and in "There Is Nothing Like A Nurse" to sing "When I Die" and "I Wonder If They Miss Us". Wainwright says in interviews that he was very excited about being on M*A*S*H and wishes he'd been in more episodes. The songs you heard were ones he wrote especially for those episodes.
Broken Base: The series seems firmly divided between fans who preferred the earlier seasons (which focused more on comedy) and the later seasons (that focused more on drama).
Crack Pairing: Ho Yay factor of Hawkeye and Trapper (and later B.J.) aside, a number of fans like to pair Charles with Klinger (and even more ironic, this precedes David Ogden Stiers's outing).
Radar/Henry has a fair bit of on-screen Ho Yay, too, (embracing shirtless in "The Sniper", anyone?), and that's a very, very, unequal pairing.
Hawkeye can come off like this sometimes. Every good character seems to love or adore him, and while sometimes justified for The Ace characters, it may be overbearing.
Both creator Larry Gelbart, and series writer Ken Levine, have said that of all the characters on the show, Radar was their favorite to write for. It sometimes shows as nobody could think wrong of cute little Radar. Witness "Fallen Idol", in which Radar gets self-righteous about Hawkeye running out of surgery to throw up because he was still drunk. Granted it was a major screwup, but Potter dealt with it, and Radar basically acts like it was Hawkeye's job to live up to Radar's image of him. Hawkeye then justifiably tells him off for putting that on him, and everyone (including Hawkeye himself once he calms down) acts like he's a monster for doing this. Although to be fair, the anger at Hawkeye might have been that he a) told Radar off in the most furious, over-the-top way possible rather than letting him down gently, and b) did so while Radar was lying on his back in a hospital bed recovering from combat wounds. Surely that particular lecture could have waited until a more opportune time.
Critical Research Failure: In "Baby It's Cold Outside", while watching the Sonja Henie movie Sun Valley Serenade, Colonel Potter says "This is supposed to be where she does a triple axel and ends up in a split." This does not happen anywhere in the film. In fact, it wouldn't be until 1989 when Midori Ito from Japan became the first woman to complete a triple axel in competition, Tonya Harding was the second woman to complete one and the only American woman. It's doubtful Sonja Henie ever did something as complicated as a triple axel, even with her three Olympic gold medals.
Draco in Leather Pants: Fans tend to overlook or justify a lot of Hawkeye's illegal, morally questionable and downright treasonous antics.
Colonel Sam Flagg was one of the show's most memorable recurring characters despite by only appearing in seven episodesnote Possibly eight, if you consider that Edward Winter played Captain Halloran, an intelligence officer, before playing Flagg. He plays poker with Sidney, which Flagg refers to in one appearance, leading many to believe Halloran was an alias of Flagg's. Word of God (specifically Ken Levine) said that they really enjoyed writing Flagg but kept appearances to a minimum to avoid wearing out his welcome and turning him into The Scrappy.
Major Sidney Friedman, everybody's favorite shrink, was popular with viewers. Allan Arbus was offered a permanent role on the show, but he declined.
The episode "George" comes off today as extremely dated, handling the subject of homosexuality in the military poorly and misleadingly. However, in the 1970s, having an episode that portrayed a gay soldier as a sympathetic character and a courageous Marine was really quite amazing (and, given that the show takes place in the '50s with '50s sensitivities, you could argue that it should be dated).
Same can be said for the episode "Inga": it was written and directed by Alan Alda, who was very much an outspoken advocate for women's rights, and at the time this episode aired, was during the height of feminism. Today, however, the episode comes off as very clumsy, dated, and downright sexist, particular how Hawkeye and later Charles have their male egos bruised by Inga showing them up (though it was never her intention to do so; she was there, as a doctor, simply to help keep the 4077th up to date with the latest surgical techniques). The episode sees Hawkeye learning a lesson about his attitude toward women.
Ever since Archive of Our Own writer onekisstotakewithme gave her the middle name "Jane", Peg Hunnicutt has been Peggy Jane for the fandom. Many of its most prolific writers use it, to the point its origin is almost forgotten.
In "Private Charles Lamb", after the titular lamb has turned up missing:
Henry: Everything in this country disappears but me. Boy, what I wouldn't give to wake up one morning, look down, and find myself gone.
In the "O.R." episode from Season 3, Hawkeye tells Henry he's getting arthritis and that it could be his ticket home. Henry expresses reluctance to leave Korea, where he's been able to "do more doctoring than I can do in a lifetime back in the world."
Hawkeye: Wars don't last forever, Henry, only war does. One day you're gonna have to go back home and die in your bed in Bloomington.
The first-season episode "Showtime" has a running gag about a camp dentist named Kaplan, who's gotten his discharge orders and is waiting to be shipped home but paranoid about some accident befalling him before he's able to leave Korea (which sure enough happens, when he steps on the gas instead of the brake while driving out of camp, wrecking his jeep and breaking his leg, ironically because he didn't trust the driver). It's all Played for Laughs, and he does make it out alive, but it definitely takes on a different flavor once you've seen "Abyssinia, Henry".
In one early episode, following a night of hard partying, Hawkeye jokingly tells Radar, "There were no survivors". This is exactly what Radar himself eventually says in "Abyssinia, Henry".
In another first-season episode, "Dear Dad, Again", Hawkeye says that he's surprised Father Mulcahy doesn't "go deaf from the sound of all the commandments breaking around him". In the series finale, Father Mulcahy's hearing is severely damaged (perhaps permanently) by a nearby mortar round (though Potter fixes it in the After Show).
When Margaret first gets engaged to Donald, Frank (in an obvious attempt to get into her pants) theorizes that Donald is no good. She (humorously and good-naturedly) turns him down. Several seasons later, we learn that Donald has been stealing Margaret's paychecks for himself and sleeping around behind her back while she has been faithful to him. This revelation leads to them divorcing. On that point, when Hawkeye and B.J. replace Margaret's engagement ring, the seller messes up the inscription to read, "Over hill, over dale, our love will ever fail."
"You know, one day, Pierce, he's going to throw the book at you, and I won't be there to help." Two seasons after Henry's aforementioned death, Frank finally brings Hawkeye up on mutiny charges (ironically false allegations considering the number of legitimate charges he could've leveled) and has zero compunctions about allowing a court to hang Hawkeye. Or worse. Ultimately subverted since the officer in charge of the court martial believed Frank's credibility to be shot, but it wasn't until Henry was gone that Frank actually got so far.
Genius Bonus: In "Bombshells", Hawkeye is trying to telephone Marilyn Monroe by impersonating baseball great Ted Williams. Marilyn's assistant screens the call by asking "Ted" for his greatest thrill in sports. Hawkeye fudges that his greatest thrill is "just being out there in left field playing for you great fans." Marilyn's assistant promptly hangs up. As baseball aficionados will recall, Ted Williams was known for having a very contentious relationship with the left field fans (and most everyone else for that matter).
Growing the Beard: Though opinions may vary, the series became a good deal more thoughtful, sincere, and mature with the departure of Trapper and Colonel Blake and the arrival of B.J. and Colonel Potter.
"Five O'Clock Charlie" has Frank's training of some Korean locals to defend themselves interrupted by Trapper, Hawkeye and Radar making fun of him with their own:
Trapper: (imitating a CO) Count off! Radar: (after moments of silence, to Hawkeye) Are you "one"? Hawkeye: (mincing) Yes, are you?
In "Welcome to Korea", Hawkeye returns from R&R to discover that Trapper got discharged and went home while he was gone. While Trapper didn't leave a written note, he did have a "message" for Radar to give Hawkeye: a big kiss on the cheek.
Hawkeye and B.J. also had a lot. From the final episode:
Hawkeye: Look, I know how tough it is for you to say goodbye, so I'll say it. Maybe you're right. Maybe we will see each other again. But just in case we don't, I want you to know how much you've meant to me. I'll never be able to shake you. Whenever I see a pair of big feet or a cheesy mustache, I'll think of you. B.J.: Whenever I smell month-old socks, I'll think of you. Hawkeye: Or the next time somebody nails my shoe to the floor... B.J.: Or when somebody gives me a martini that tastes like lighter fluid... Hawkeye: I'll miss you. B.J.: I'll miss you, a lot. I can't imagine what this place would've been like if I hadn't found you here.
"What if I were dying? Would you hold me and let me die in your arms, or leave me on the floor to bleed?"
Hawkeye also seems to enjoy having fantasies that involve B.J. in romantic situations.
B.J. actually starts to veer off into Crazy Jealous Guy territory when Hawkeye gets to reminiscing about "the good old days with Trapper". He once even remarks that he sometimes hates Trapper even though he never even met him, and looks crushed whenever Hawkeye implies he's a Replacement Goldfish.
Hawkeye has No Sense of Personal Space with everyone, but seemed very fond of touching Henry whenever he wanted something, and kissed him on two cheeks when they said goodbye. The sex strike in Edwina has him staring at Henrys legs, and Trapper looks annoyed.
Henry: You fix that [Margarets report on him], sweetheart, and Ill give you a bath.
Hawkeye: That part of our relationship is over, Henry.
Then there's Klinger, who regularly wrote love letters to generals and tried to kiss or molest any high-ranking officer who visited the camp...all in the name of Obfuscating Insanity, of course.
This website has a list of every single slashy quote from the entire series. It's... extensive.
On a much less fun note, Hawkeye's repressed trauma memory is of a boy he loved (a "cousin" but was never mentioned before) who laughed as he pushed Hawkeye into the water and told him after "you'd be dead if it weren't for me". It's like Siken with sneezing.
Literally Tommy from Sometimes You Hear The Bullet is introduced by saying he loves Hawkeye, grabs him like hes aiming for a kiss, calls him beautiful and then kisses Henry. No wonder that nearly every slashy fic in existence has Tommy an old boyfriend of Hawkeyes.
Hawkeye and Mulcahy flirt a lot, and when (in Run For The Money) Mulcahy asks whats in it for him, Hawkeye gets close enough to kiss and asks what he wants. It then cuts to the next scene.
Lyle in Springtime has a blatant crush on Hawkeye, liking to do things for him, being overly protective, and giving him a smack on the ass that sends him flying.
"Operation Noselift", in which Radar pretends to be hit by a baseball to cover for another soldier's nose job, only to be seen without a bandage on his nose while everyone else has a bandaged nose. The soldier getting the nose job could have been "hit" by the baseball to explain getting operated on without the need for secrecy, to say nothing about having to explain the new nose when he comes back from leave.
"The Nurses", in which a nurse's husband is on leave for 24 hours, so Hawkeye and B.J. make up a fake diagnosis to keep him quarantined in Margaret's tent so the nurse can be with him... despite the VIP tent being vacant.
In "Fallen Idol", Hawkeye is treated as a monster for going off on Radar...who acted as if he was the victim of Hawkeye having to leave surgery because he was drunk/hungover, because the guy he looked up to was less than perfect. As Hawkeye pointed out, he was going through hell, and just trying to survive, not to be someone's role model. Though Hawkeye screwed up, it was unfair of Radar to put him on a pedestal and then demand he live up to it.
"Communication Breakdown" portrays Charles as being in the wrong for not wanting the entire camp to mooch off of the newspapers that were sent specifically for him, from home, and everyone treats him as being selfish when he refuses to share them.
He becomes much more sympathetic if you pay attention to the snatches of his backstory that he occasionally reveals (usually while drunk). If you had his home life, you'd probably be pretty messed up, too.
Launcher of a Thousand Ships: Margaret by virtue for being the only main woman in the cast, and Hawkeye because even in canon he liked to tease that hed loved as many of the camp as he could, with both male and female characters reacting with approval.
LGBT Fanbase: While not ignoring its flaws (it's a 70's show after all), has a healthy one. Mainly because it's incredibly easy to read Hawkeye as bisexual.
Memetic Mutation: "I'm not as think as you drunk I am!" is possibly courtesy of a very drunk Margaret Houlihan from the episode "Hot Lips and Empty Arms".
That line dates from at least the 1920s and can be found in Bennett Cerf humor collections. However, there's no question that its use on the show re-popularized it.
"Aaaah, Bach!" comes from Radar's attempts to impress a cultured nurse in "Love Story".
"Bottom Hawkeye". Coming from The Joker Is Wild's innuendos that B.J. was the top, tumblr fans went wild with evidence photosets that, along with being bi, Hawkeye's a bratty bottom.
More Popular Replacement: B.J. is better received than his predecessor Trapper, for being a more-rounded and fleshed-out, as well having a contrasting personality to Hawkeye, whereas Trapper was much like a mirror of Hawkeye though reduced to a sidekick.
Narm: Any time Trapper would dramatically declare his longing to be home with his wife and the horrors of being separated from his family by the war, since chances were almost 100% that the episode would also show him thoroughly enjoying her absence with whatever hot girl crossed his path. Possibly the same with Colonel Blake, though since he was often less brazen and smug about his conquests, it didn't cause quite so much dissonance.
While he had good comic timing, Alan Alda is practically dripping with Narm in his more dramatic moments. Just watch him scream about how much he hated his cousin Billy for playfully tossing him into a pond before Hawkeye himself knew how to swim (the same cousin pulled him out).
That same episode shows that, for all his other talents, Alda cannot do a fake sneeze, coming out as more of an aborted shout. Made worse when Alan Arbus delivers a perfect stage sneeze in The Stinger.
"The Billfold Syndrome" features an amnesiac soldier who is hypnotised in order to relive the traumatic event. This delicate procedure is aided by Hawkeye and B.J. banging books on a table and going wheee!-pshh to simulate the battle, while the patient stares vaguely into space. It's very sad, but probably not in the way intended.
John Ritter as a soldier who flips out and holds Frank at gunpoint.
Younger viewers might recognize occasional guest star Mako as the voice of Uncle Iroh in Avatar: The Last Airbender. They also might recognize Sab Shimono as the voice of Monk Gyatso/Master Yu.
Jack Soo, later Detective Nick Yemana on Barney Miller, as a black marketeer.
Art LaFleur, a character actor who's been in quite a lot of stuff, as an MP who comes to bust the 4077th for stealing a general's steak but ends up joining them for dinner.
Ed Begley Jr., Dr. Victor Ehrlich on St. Elsewhere, as a young soldier who is clumsy in combat but turns out to be a fantastic cook.
Kevin Hagen, Little House on the Prairie's Dr. Baker, as a colonel who gets men killed to retrieve the bodies of American soldiers, then later as a major who shows up to deliver a warning with a wink and a nod to Hawkeye for disrupting the peace conference.
Barry Corbin, Whitey from One Tree Hill, as a retention officer who talks a despondent Klinger into reenlisting.
Some younger viewers may wonder what the big deal is, but you can thank M*A*S*H for pretty much every Dramedy series that's come in its wake. It also pioneered the use of film-style pacing and Loads and Loads of Characters in an American sitcom.
Before M*A*S*H, if an actor left a show and a Suspiciously Similar Substitute came in, it wasn't the norm for the change to become an in-universe plot point. In an era when there were no DVD box sets but there were reruns, TV episodes were created so that they could be watched in any order and old characters were never mentioned again after their actors left. Because, you know, that might shock and confuse people. M*A*S*H is an early (and, by today's standards, primitive) example of long-running continuity in a television show.
Ship-to-Ship Combat: The Hawkeye/Trapper and Hawkeye/B.J. wars still rage. Not helped (or helped if you like the angst) that Hawkeye's bitter about being left by Trapper for the rest of the series, B.J. fears he's a Replacement Goldfish, and in the finale, Hawkeye is desperate to leave a goodbye, partly because Trapper didn't.
Special Effect Failure: "The Trial of Henry Blake" has a scene of Klinger attempting to escape the camp via hang-glider. This is shown with very obvious blue-screen usage. You can see his feet moving in a manner that shows he's actually running.
When Klinger and Hawkeye go around camp nude in different episodes (Klinger to convince a general that he's insane, Hawkeye to win a bet with Trapper), the underwear the actors are wearing is plainly visible.
The show's interior soundstage set includes some "outdoor" portions immediately surrounding the main tents and buildings (complete with painted mountains, plastic trees, etc.) which were used for some episodes when the actual outdoor set at the Malibu Ranch was unavailable. In certain episodes they'll cut between the interior and exterior sets in the very same scene! "Five O'Clock Charlie" is a glaring example as a sequence shows Frank, in an exterior scene, addressing Hawkeye and Trapper, then it cuts to Hawkeye and Trapper responding in what is clearly an interior scene.
In the episode where Radar rescues Sophie (at the time a stallion instead of a mare), B.J. and Hawkeye are trying to extract a piece of shrapnel from the horse's rump, leading it to kick through the wall of the supply building. The legs are obviously wooden models, and one of them breaks and is hanging from splinters after the second kick.
Squick: In "The Birthday Girls", B.J. has to relay phoned-in instructions from a vet to Potter and Hawkeye, who are in a stable out in the compound. His decision to use the PA system causes diners in the mess tent to push their trays away. Potter and especially Hawkeye are also visibly horrified by the measures they must take to ensure the live birth of a calf from an injured cow.
Frank is dismissed a racist idiot for his paranoia about two locals burying a 'bomb' (really a pot containing kimchi, Korean sauerkraut) beside a road near the camp. In the wake of the wars in Iraq and Afghanistan, which saw makeshift roadside bombs used as a primary weapon against coalition troops, Frank is justified in being suspicious of an unknown object being buried next to a road. On the other hand, some of Hawkeye and B.J.'s scorn might have come from Frank being so unfamiliar with the locals that he didn't even know what a kimchi pot was, though that wouldn't prevent it from being a real bomb.
Similarly, any episode where Frank is suspicious of the locals who come into the camp and have largely unrestricted access to it. Arming such "trustees" with bombs or weapons isn't just something that's been seen a lot in more recent wars such as Iraq and Afghanistan, but was specifically something Korean and Vietnamese forces would do. Additionally, burying a kimchi pot would be an excellent cover story for planting a roadside bomb.
One episode has Radar realize too late that a North Korean soldier entered the camp — in full uniform, no less — and filled up a tray in the mess tent, without anyone else seeming to notice or care. The camp's security was abysmal and no one seemed to actually give a shit that they were in a war zone only a few miles from the front lines and were repeatedly targeted despite being a noncombatant medical facility.
In the same vein as the above, there's an episode where a South Korean soldier is waiting around to take away an injured female North Korean guerilla. The woman repeatedly states that she hates everyone, attempts to murder one of the other patients, and in general makes it very clear she hopes everyone in the 4077th is killed horribly. B.J. and Hawkeye treat her as if she were a poor maligned saint throughout, and the South Korean soldier as if he were a malicious villain just doing it For the Evulz... instead they both come off looking like naive, chauvinistic idiots trying to tell one of the people whose country has suffered the most from people like her what he should think. However, some fans argue that despite her crimes, it was the prospect of the guerrilla being brutally tortured that Hawkeye and B.J. objected to, as something that was beyond the pale regardless of what she was guilty of. On the other hand, the only evidence of torture comes from a rumor heard by a patient in Post-Op.
In one episode, Trapper is talking about how much he misses his wife, which rings rather hollow considering he's been cheating on her with various nurses and appears not to feel even slightly bad about it.
Margaret feeling shunned by the nurse which is treated as unfair to her. Thing is she acts very unnecessarily mean towards many of the nurses, which is why they never hang with her.
B.J. got hit with this, especially in season 7's "The Party". Sure, he's allowed to be disappointed that nobody's enthusiastic about his plan for a family party back home - but not while everyone is focusing on the camp bugging out!
Colonel Flagg. He appears in only seven episodes, eight if you count Captain Halloran as an alias. The writers have said they eventually had to phase him out of the show, because he was too silly and one-dimensional due to Flanderization and Badass Decay, and thus would have been out of place with the direction the show took in tone. He does, however, make an appearance in a two-parter episode of the After Show.
Sidney Freedman is arguably another example of this, showing up in just 12 episodes. Indeed, the creators offered Allan Arbus a full-time cast slot, and he turned it down. However, as with Flagg it could be argued that the very rarity of his appearances made the character more effective and memorable.
Pat Morita as Captain Sam Pak, the visiting ROK surgeon who turns up in Season 2's "Deal Me Out" and "The Chosen People". Morita brought a lot of humor to the role and had excellent chemistry with the regular cast, and one can't help wishing he'd been used for more than just two episodes.
Values Dissonance: While the TV series doesn't have quite as much of this as the movie or especially the novel, there's still a number of things that would probably raise the eyebrows of modern audiences:
The episode where Hawkeye, B.J., and Col. Potter arrive at camp driving drunk in celebration of making a general look ridiculous may have been a standard comedy business in the late 1970s, but now a typical viewer, well aware of the dangers of drinking and driving, would be alarmed that they could have killed someone, or themselves. OTOH, they were on the road with no other cars in evidence; however crowded or deserted the roads in that part of Korea were in real life, on the show, encountering other vehicles seemed to be a rarity.
There's also the fact that Trapper is considered to be a positively-viewed character, despite his nickname coming from the fact that he was accused of raping a girl, though it's kind of implied that it was a reputation-saving False Rape Accusation on the part of the young woman in question.
"Bananas, Crackers, and Nuts" and "Operation Noselift" both have a visiting character coming on to Hot Lips and eventually trying to force himself on her, and both times the near-assault is Played for Laughs. Oddly enough, in both episodes the would-be rapist is played by Stuart Margolin, although they're entirely different characters. In the former, Hawkeye, Trapper, and Radar set up the whole thing, and then stood by as she screamed for help.
A lot of the more sexual jabs that Hawkeye and Trapper took at Margaret, especially referencing her breasts and sex life, would be looked upon as sexual harassment today.
Values Resonance: Hawkeye is incredibly popular with (especially LGBTQ) millennials, being one of the first characters in television to be an attractive man who gets increasingly whumped/put through hell as the series goes on, be both sensitive and punished for earlier misogyny, have socialist values and is commonly referred to as a "bicon" (with even gay viewers at the time thinking something was up).
We're Still Relevant, Dammit!: As a Vietnam allegory, it loses something after the Paris Peace Accord and repeal of the draft in 1973 and the Fall of Saigon in 1975. The show's producers insist that it's a commentary on war in general rather than Vietnam (or Korea) in particular. Whatever the intentions of the TV show, the original movie was unmistakably about Vietnam.
What Do You Mean, It Wasn't Made on Drugs?: Some of the jokes seem like they were written by someone who was high and couldn't stop laughing. For instance, "Bug Out Part 2", Radar runs through the frame of a dismantled tent, then runs back through it and runs out the door. Although this could be a bit of Fridge Brilliance, showing how thoroughly indoctrinated Radar was to army life that he even made sure to use proper exits and entrances when it wasn't necessary.
The Woobie: Pretty much everyone was this at least once. Yes, including Frank.