* ActorAllusion: Niles mentions filling Frasier's [[TheSimpsons floppy red shoes]] which could be a reference to his character [[TheSimpsons Sideshow Bob]]. Guess who voices Bob's brother in several episodes? Yep -- it's a mirrored Actor Allusion.
** The first episode to feature "Sideshow" Cecil Terwilliger was aptly named "Brother From Another Series". In one bit, Bart has covered Cecil's eyes to surprise him, and pulls the standard "Guess who?" gag, to which Cecil replies, "[[TheUnseen Maris?]]" TheSimpsons blandly lampshades this with a Frasier-esque title card reading "Frasier is a Hit Show on the NBC Network." Taken even further in "Funeral for a Fiend", which introduces Bob and Cecil's father Robert, played by...John Mahoney.
** Dr. Nora's mother is played by Piper Laurie, aka [[{{Carrie}} Carrie's mother]].
--->'''Mrs. Mulherne:''' YOU LITTLE WHORE!
** This could also be an allusion to an episode of Cheers where Frasier suited up as a clown to entertain for a kid's birthday party Rebecca was in charge of putting together.
* DirectedByCastMember: Kelsey Grammer and Dan Butler
** Grammer in particular became one of the series' main directors, helming ''thirty-seven'' episodes, many of them consecutively. He began in Season 3 with the famous "Moon Dance" (which [[LowerDeckEpisode focused on Niles and Daphne more]] to give him more time behind the camera) and directed with increasing frequency over the course of the rest of the series.
* [[EditedForSyndication Edited For the Hallmark Channel]]: The Hallmark Channel routinely speeds up the end credits, resulting in the little skits looking like Creator/CharlieChaplin shorts, with Kelsey Grammer lucky if he manages to get up to the line "Scrambled eggs all over my face" by the time the Grub Street logo appears.
* FakeAmerican: John Mahoney was born and raised in Blackpool, Britain. He became a US citizen in 1959, but sometimes his old accent pops up.
* FakeBrit:
** Daphne's least favorite brother, Simon (played by Australian Anthony [=LaPaglia=]) has a terribly unconvincing accent. Mostly played for laughs, though.
** See also any guest actor (not-British) playing Daphne's random boyfriends in earlier seasons. See BritishAccents above.
** Jane Leeves is British but cannot do a Manchester accent for toffee. God help the woman if she ever needed directions to the Trafford Centre. WordOfGod is that they wanted Daphne's accent to be working class and understandable to Americans so Jane Leeves adopted that particular accent. [[http://www.bbc.co.uk/news/entertainment-arts-13543479]]
** Gil Chesterton is played by an American-born English actor and displays many symptoms of IAmVeryBritish. In one of the first episodes, Frasier comments on his "phony accent."
* HeyItsThatVoice: It was not uncommon for celebrities to make cameos as callers to Frasier's show.
** The final episode of many (but not all) seasons replace the usual end of episode gag with a "thanks for calling" montage listing the cameos made that season.
*** One caller called Frasier and complained about her meddling in laws and the voice sounds suspiciously like [[EverybodyLovesRaymond Debra Barone]].
* TheOtherDarrin: Frederick Crane was played by two different child actors on this show (not counting the twins who took turns playing him on ''Cheers''.
** Not to mention Frasier's first wife, Nanny G, played by Laurie Metcalf in an episode of this show after having been played by Creator/EmmaThompson in a ''Cheers'' episode.
* RealitySubtext
** Kelsey Grammer has said that his favourite episode was "The Show Where Diane Comes Back" (the plot of which was Diane Chambers of ''{{Cheers}}'' and Frasier Crane's eventual reconciliation), because it gave him the opportunity to finally reconcile with Shelley Long, the actress who portrayed Diane. Also-
-->'''Frasier:''' You have a wonderful career.
-->'''Nanny G:''' But nothing ever changes! Do you have any idea what it's like to play the same character for ''twenty years''?
::Humor heightened by the fact that Nanny G had appeared three times, once on ''{{Cheers}}'', twice on this show, [[TheOtherDarrin each time played by a different actress]].
** And the episode with Sir Creator/DerekJacobi, who essentially plays Creator/PatrickStewart playing [[Series/StarTrekTheNextGeneration Data]] doing Creator/WilliamShakespeare. Frasier is upset over the man he idolized being a ClassicallyTrainedExtra (which Jacobi actually ''is'', and he won a Guest Actor Emmy for the episode), but it turns out he really is [[BadBadActing a terrible actor]]. And to top that off, take into account Kelsey Grammar's guest stint on [[Series/StarTrekTheNextGeneration TNG]]. And [[HilariousInHindsight now that Jacobi himself has played]] [[Series/DoctorWho The Master]]... let's just say this episode ''lives'' on RealitySubtext.
** Niles and Daphne have a son named David in the series finale, named after producer David Angell who died in the 9/11 attacks.
* RealLifeRelative: Kelsey Grammer's then-wife Camille (whom Kelsey divorced in February 2011) makes a cameo as a partygoer dressed as Eve in "Halloween". Frasier hits on her, but she leaves with another man... dressed as Satan no less.
* ReclusiveArtist: One episode centres around Martin befriending an acclaimed OneBookAuthor, and his sons trying vainly to get on the man's good side (and of course, making him [[DiggingYourselfDeeper hate them more with every attempt]]). When he and Martin go to Duke's;
-->'''Frasier:''' They'll probably bump into Creator/JDSalinger and Creator/SalmanRushdie and go out for margaritas!
** Ultimately, [[spoiler:they unintentionally convince him his new book is derivative and he destroys it.]]
* StarMakingRole: HeyItsThatGuy from ''Series/{{Cheers}}''...and he has his own show!
* StuntCasting: Parodied. The people who call in to Frasier's radio show are usually famous celebrities, but you'd never know unless you tune in to the [[CreativeClosingCredits closing credits]].
* WhatCouldHaveBeen:
** Kirstie Alley is the only actor from ''Cheers'' to not reprise her role on ''Frasier'', reportedly because Scientology does not believe in psychiatry, and Frasier is a psychiatrist. In the later episodes of ''Cheers'', around the time Lilith and Frasier were going through their separation, Frasier and Rebecca nearly ended up in bed together. Wasting a perfectly good [[UnresolvedSexualTension UST]] plot...
*** Kirstie Alley claimed in one interview that her being a Scientologist had nothing to do with her never appearing on ''Frasier'', and at least one of the show's writers (Ken Levine) said in a radio interview that they never considered having Kirstie Alley on, mainly because they weren't sure how to write her in, as Rebecca and Frasier hardly interacted on ''Cheers''. Alley also said once she auditioned to play one of Frasier's [[GirlOfTheWeek girlfriends of the week]], but was turned down, because the producers thought [[YouLookFamiliar that would be kind of weird]].
** Lisa Kudrow was originally cast as Roz, however after the first few days of filming the producers decided that her quirky humor didn't fit the part and they hired Peri Gilpin instead (according to Kudrow, Gilpin was their first choice, but switched her for Kudrow for some reason, then simply restored order by bringing Gilpin back.) Plus, imagine how this would have affected ''{{Friends}}'' if Kudrow had remained on ''Frasier''.
** Frasier's brother Niles wasn't in the original concept and hadn't been mentioned on ''Cheers''. The inspiration for the character came after the producers saw a headshot of David Hyde Pierce and noted his brotherly resemblance to Kelsey Grammer.