* ActorAllusion: Puss, played by Antonio Banderas, ''is'' Zorro as a cat - right down to the trademark letter-carved-on-a-tree.
** In ''Shrek the Third'', listen to the queen's NonSequiturThud after [[spoiler:she head-butts the wall apart]]. Sound familiar? [[spoiler:It's a bit of "A Spoonful of Sugar" and "My Favorite Things".]]
** King Harold makes a excuse about his old "crusade wound" acting up. As [[FawltyTowers Basil Fawlty]], Creator/JohnCleese made a similar claim about an old war wound.
*** Surely, 'twas [[Film/MontyPythonAndTheHolyGrail only a flesh wound?]]
** After Lillian (voiced by Julie Andrews) breaks the second wall with her head, she starts humming [[TheSoundOfMusic My Favorite Things]].
** Surely Mike Myers as [[AustinPowers a big guy with a Scottish accent]] counts; ''Shrek Forever After'' even has [[StealthPun Fiona mistakenly calling him "Scott"]].
** Shrek cracks a mirror by looking into it and smiling: the scene is [[IncrediblyLamePun virtually]] identical to the same one featured in Mike Myers' ''AustinPowers'' films.
** Donkey's line "I had my mouth open and everything" actually came from part of EddieMurphy's "Delirious" routine.
*** And the line "I'm a donkey on the edge!" may be a reference to ''BeverlyHillsCop'':
-->"I am your worst nightmare! ''A nigga with a badge!''"
** In the fourth movie, Donkey very poorly sings the final line of Whitney Houston's "Greatest Love Of All", a reference to Eddie Murphy's role as the incredibly untalented Randy Watson in ComingToAmerica.
** Shrek tells Donkey "You're going the right way for a smacked bottom". Austin Powers said the exact same thing to Madonna in the ''Beautiful Stranger'' video.
** Donkey bragging about how he's [[Film/TheNuttyProfessor "the stairmaster"]].
** And how have not mentioned Shrek:
*** Having a Scottish accent
*** Being accused of eating his own children
*** Boasting about how his bowel movements could kill a donkey
*** Taking physical abuse first in his backside, then in his gonads.
* {{Blooper}}: In Shrek 2, when Fiona knocks out Prince Charming with a headbutt, he's seen seconds later perfectly fine throwing the wand to the Fairy Godmother. You could argue that he recovered quickly, but then a few minutes later, he's seen getting up from the headbutt.
* CashCowFranchise: In the top 10 for "Highest grossing movie franchises of all time" list.
* CelebrityVoiceActor: The four main characters were played by Mike Myers, Creator/CameronDiaz, Creator/EddieMurphy, and JohnLithgow - all of whom were BilledAboveTheTitle. Creator/JimCummings, who has a relatively prominent role as the Captain of the Guard, is the only voice actor by profession to appear in the film.
* CrossDressingVoices: Gingy is puppeteered and voiced by a woman in each production.
* DeletedScene: One from film 1 has Fiona meeting a Gypsy woman named Bib Fortuna (a reference to the ''Franchise/StarWars'' character of the same name), who would eventually become the FairyGodmother. In this version Fiona is ''always'' an ogre, and Bib Fortuna gives her a potion that would make her beautiful, but tells her that she will alternate between her human and ogress forms until she finds true love. After that, she is whisked away by her dragon guardian and returned to the tower.
** Also ThatOtherWiki says that the filmmakers intended to show the "Happily Ever After"-Form of Dragon as a pink winged Mare in ''Shrek 2''. They decided against it. [[http://en.wikipedia.org/wiki/Donkey_(Shrek)]]
* FranchiseKiller: Creator/DreamWorks had plans for five movies in the ''Shrek'' film series. ''Shrek'' was the first animated film to win the newly coined Academy Award for Best Animated Film in 2001, over WesternAnimation/MonstersInc and JimmyNeutronBoyGenius. ''Shrek 2'' was nominated for the award and lost to TheIncredibles, but it became not just the highest grossing film of 2004 but Creator/DreamWorks' most successful film thus far. ''Shrek the Third'' though, was financially successful than ''Shrek 2'', got mixed to negative reviews from critics and was not even considered for Best Animated Film of 2007. The lukewarm reception to ''Shrek the Third'' led Creator/DreamWorks to finish up the well under development ''Shrek Goes Fourth'', which was retitled ''Shrek Forever After'' and became the de facto final movie, ending the series at four. ''Shrek Pleads the Fifth'', the fifth movie, was canceled and turned into a prequel film about Puss In Boots.
* HeyItsThatGuy: The resemblance of human Shrek to (dour Scottish) British politician GordonBrown was widely noted by the British media.
* HeyItsThatVoice: Averted -- regardless of who you think Gingi, Pinocchio, the Magic Mirror and even BigBad Rumpelstiltskin sound like, they're all voiced by animators. In a positive case of ExecutiveMeddling, the execs liked the animators' temporary voice tracks so much that they [[ThrowItIn let them "act" in the movie]].
** And in the fourth film, ''[[Series/MadMen Jon freakin' Hamm]]'' as Brogan.
** One of the major selling points in the Mexican dub was the voice of famous comedian EugenioDerbez as Donkey. While HumbertoVelez was Farquadd.
** In the Spanish dub, Shrek and Donkey were voiced by Juan Antonio Muñoz and José Mota, the members of the (now separated) popular Spanish comedy duo Cruz y Raya, which counts as this, CelebrityVoiceActor and RelationshipVoiceActor at the same time.
** Prince Charming as the fox in the first ''[[Literature/TheChroniclesOfNarnia Narnia]]'' film.
** Mike Myers' voice for Shrek greatly resembles the voice he used for another Scottish character he played: Fat Bastard from the ''Film/AustinPowers'' movies (or [[http://snl.jt.org/char.php?i=382 Andy Grey]] from the short-lived ''Saturday Night Live'' sketch, "Scottish Soccer Hooligan Weekly")
*** In addition to voicing Shrek, Mike Myers also voices one of the Three Blind Mice in the first movie.
** Captain Hook sings songs by [[Music/TomWaits Tom Waits]] and [[Music/NickCave Nick Cave]]. It's pretty noticeable since both artists have very different voices.
* TheOtherDarrin: Eddie Murphy doesn't voice Donkey in ''Scared Shrekless''.
* TheOtherMarty: Chris Farley was attached to ''Shrek'' early in its development, but after his death (and many story changes) the role went to Mike Myers, who then performed an odd same-actor version of this trope, switching to a Scottish accent partway through and re-recording already-done lines.
* ThrowItIn:
** The line "You're on your way to a smacked bottom" was improvised by Mike Myers after he got annoyed at one of the directors.
** The scene where Princess Fiona burps was written after Cameron Diaz burped during a recording session after drinking Coca-Cola.
* WhatCouldHaveBeen:
** The film was originally going to be produced by Creator/StevenSpielberg, be hand-drawn, and star Creator/BillMurray as Shrek and SteveMartin as Donkey.
** The original script had Princess Fiona born an ogre to the late King and Queen of Duloc. They had her locked in the tower under the lie that she was "of such rare beauty" she was kidnapped. They died, and the kingdom was left under the rule of an ambitious regent (implied to be Farquaad). When she 'became of age' to ascend the throne she escaped the tower and encounters a witch named Bib Fortuna (a reference to the Star Wars character of the same name) - who has narrated the entire sequence through her tarot cards. She gave Fiona a potion which would make her beautiful; but Fortuna warns her the potion has a side effect - she will change between her human and ogress form until she finds her true love. Later she was whisked away by her dragon guardian and returned to the tower. This storyline was not adapted to keep the story simple, but is mentioned through the "witch" Fiona tells Donkey about.
** Chris Farley was originally cast as Shrek and even recorded part of the dialogue. When Farley died, another ''SNL'' cast member got his part (Mike Myers).
** PaulMcCartney originally was in talks to voice Rumplestiltskin, even going as far as having a musical number for him planned with a song written by [=McCartney=] himself.
----