These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Alternative Character Interpretation: Some fans suspect that Daphne might have been secretly in love with Niles as long he was secretly in love with her, but repressed and concealed her own attraction better than he did. Certain moments, such as the time she ill-conceivedly sort-of-tried to seduce him in "Daphne Hates Sherry", her behavior towards him in several episodes such as "First Date" and "A Midwinter's Night Dream", and her suspiciously sincere words and actions in "Moon Dance" make it difficult to be sure that her feelings for him were really as innocent as everyone assumed.
Martin Crane: Long-suffering but loving down-to-earth father, or emotionally abusive and utterly ungrateful Jerk Ass?
Broken Base: Having Niles and Daphne get together is a source of debate for the fans. Some think it didn't work; not because it was a bad idea, merely because the plots written for them were not as entertaining or amusing as the earlier Unresolved Sexual Tension ones.
Others think them finally getting together marked a sharp upturn in quality and dimensionality in the already-great series.
Crazy Awesome: KACL Station Manager Kenny Daly takes over Frasier's show for a pinch in the series finale. It has to be seen to be believed.
Niles:(playing Frasier) Now, I want you to contribute, but only up to a point.
Frasier:(playing Mary) So you want me to stay in my place, Massa?!
Niles: She's not going to say "massa".
Frasier: What, am I gettin' too uppity for you? You sherry swillin', opera lovin', Armani wearin' elitist? You have no idea how difficult it is for a black woman in a white man's world!
Frasier:(practically snapping his fingers) I DON'T THINK SO!
Draco in Leather Pants: An in-universe example. Martin and the boys talk about Hester as if she were a saint, but from what we know about her: She cheated on Martin at least once, she egged on the rivalry between Frasier and Niles that continues to affect them in adulthood and that's not even counting her manipulative, shrewish behaviour on Cheers. On the other hand, they wouldn't exactly be the first grieving sons/husbands to ever decide to Never Speak Ill of the Dead when it comes to a deceased and clearly much-loved-and-loving-despite-her-flaws mother/wife, so this is perhaps understandable.
It's usually played for Black Comedy, but the descriptions of the severe and vicious bullying Frasier and Niles suffered in elementary and high school can be uncomfortable to those who went through similar experiences in their childhood, especially when Martin displays No Sympathy and the experiences have clearly made the two very neurotic.
One episode has someone steals Frasier's briefcase, then pick up his dry-cleaning using a stub from it. When Frasier reaches out on his show for the thief to return it with no consequences, the thief calls to set up a meeting, really using it as a pretense to know where Frasier will be, because the briefcase had Frasier's spare set of car keys and the thief drives off in his BMW. Frasier is then called by a woman who claims they went on a date, and surmises that the thief is now impersonating Frasier to seduce women. The entire situation is Played for Laughs and even in-universe people think it's funny, seemingly apathetic that Frasier is being hit with a very serious case of identity theft.
"Oh some boys go to college, but we think they're all wussies. Cuz they get all the knowledge, and we get all the—doom dodoom dududdoom dudoom dudoom."
Genius Bonus: The show is as much a master of this trope as Ada Lovelace was a master of mathematics.
That's Augusta Ada King, Countess of Lovelace to you!
According to the producers, sitcoms generally run on "the 70% joke", where 70% of the TV-watching audience will get the joke and laugh, while Frasier often had "the 20% joke". It didn't seem to hurt them, though.
The episode where Sam Malone shows up, Sam and Roz do a bit of flirting. Almost 2 decades later, Ted Danson and Peri Gilpin play husband and wife on CSI.
Joe Mantegna was one of the guest callers.
Late in the series it's revealed that what Frasier thought was the cough button was actually the echo button. It's possible that it was a mistake isolated to the episode, but it's fun to keep that in mind and look at everything Frasier has said on the air when he thought he was muting himself. With an echo.
Ho Yay: Charlotte's boyfriend towards Frasier. He falls asleep leaning on him, he asks him for a neck rub, he gives him a longer goodbye hug than his ex-girlfriend...
Informed Attractiveness: Madeline. Frasier picks her out of Seattle Magazine article full of eligible, attractive women, describing her appearance as a fresh angel before going on to read her qualifications. Even Roz agrees she's beautiful. When the audience gets to see her, while she certainly isn't unattractive, she's not nearly as striking as over half the women Frasier has dated in the show.
When Daphne's brother Simon and her mother started appearing quite frequently, the terms 'annoying', 'obnoxious' and, most critically, 'not very funny' began to be heard applied to them very quickly.
Also, Lana's son Kirby was introduced as a young, everyman character and totally upset the show's character dynamic.
Strawman Has a Point: In "Room Full of Heroes", Niles begins to say, in-character as Martin, that he and Frasier were disappointments to him. Martin sharply cuts him off and says he's portraying him as a "drunken judgmental jackass." While Niles was certainly over the line and had indeed had a few beers, considering how Martin treats the two of them and routinely expresses exasperation about their behavior, it's hard not to see why Niles would think this way.
This could be why Martin reacts so poorly, at least partly; Niles's performance was clearly beginning to hit a bit close to home in other ways (such as his drinking habits) as well...
Tastes Like Diabetes: The climax of the episode with Frasier's ex-wife Nanny G. Yes...the stage show. Good grief, the stage show!!!
Took a Level in Jerkass: A mild example, but the Frasier in Boston was nowhere near as elitist and snobby as the Frasier in Seattle. He's still basically good, but his shell of superiority is a bit thicker.
The fact that almost all of the jokes made at Roz's expense are about her sex life can be a little close to slut-shaming, though she only seems to mind when someone (like Niles) is deliberately using them to put her down, and frequently encourages them otherwise.
Even with Niles, she never seemed to mind that much, as she always had a quip about his own lifestyle to fire back with. Various episodes imply that both of them enjoy and look forward to these encounters.
The constant fat jokes made during the story arc where Daphne gained a lot of weight. Though it wasn't an issue of shaming someone for who they are, as her increased body size was due to an abnormal situation, they came off as a little cruel once it came to light that she was eating due to severe insecurities at the time.
This may be justified as the show attempting to reinforce this plot point to cover for the actress needing to go on pregnancy leave.
The Woobie: Niles. Although he's in love with another woman, he stays faithful to his cold and unloving wife for years, only to discover that she's cheating on him with their therapist. After the brutal divorce is over, the woman he truly loves is dating his divorce lawyer. And the list goes on, and on...
On occasion, Frasier can also become this; particularly when his loneliness and romantic despair is stressed.
Or when his advice would go horribly wrong for reasons he could not possibly have foreseen or had any control over, or when he gets blamed for advice other people gave. (For a combination of both of these, see the Leap Year episode. Martin has been urging Daphne to get a new haircut for months to the point of saying he'd pay for it, while Frasier merely says that it's a good day to take chances. Daphne's hairdresser proceeds to give her an absolutely hideous hairstyle for no explained reason, and rather than blaming the hairdresser or Martin, Daphne blames Frasier... and ends the episode laughing at his humiliation on television.)
Even Daphne's fiancÚ, Donny, can fit; yes, we're rooting for Niles and Daphne to end up together, but he still gets it rough, and he's a fairly decent guy. His counterpart, Mel, never gets the same sympathy, as she's portrayed as a much crueler individual.
The first scene of Donny after Daphne and Niles get together, Frasier finds him sitting in the dark in his office, despondant and talking to the groom from his wedding cake, who he's named "Mr. Chump". He furthermore tells Frasier he doesn't hate Daphne for what happened, but he weakly jokes that as a lawyer, suing people is just his knee-jerk reaction to handling problems. While Frasier's confession of his hand in the events gets his riled up, the scene makes it clear that he was thrown into a Heroic BSOD by what happened and just doesn't know how to handle it.