* ActorAllusion: As Tim Curry playing the hotel concierge flees from the hotel room in the second movie when he is threatened by a recording of Kevin's uncle, the recording says "Sing it, Frankie"...an allusion to Curry's previous role as Dr. Frank N. Furter from ''Film/TheRockyHorrorPictureShow''.
* TheDanza: Alex D. Linz as Alex Pruitt.
* {{Defictionalization}}: The [[http://en.wikipedia.org/wiki/Talkboy Talkboy]] from ''Lost in New York'' was originally conceived as a non-working prop for the film; one letter-writing campaign from 1990s kids later, and it was Defictionalized by Tiger Electronics. It sold well enough that several variants were created, such as a [[PinkProductPloy pink-and-purple]] version called the [[DistaffCounterpart Talkgirl.]]
* DoingItForTheArt: Daniel Stern was so committed to the role of Marv, and to the concept of Marv and Harry being the Wet Bandits, that in fact, a number of Marv's antics (sticking snowglobes to the dashboard with gum, stepping on and walking across glass ornaments, trying to pry open the back door with a crowbar before giving up and just opening it, the stupid look on his face before getting hit with a flying paint can, the "Why the hell are you dressed like a chicken?" line he says when he sees Harry covered in feathers) were ad-libbed by Stern.
* HeyItsThatGuy: Amongst the kids are [[Series/TheAdventuresOfPeteAndPete Big Pete]], [[Series/TwentyFour Maya Driscoll]], [[MySoCalledLife Delia]] [[Creator/SentaMoses Fisher]], [[ComicBook/ScottPilgrim Wallace Wells]] and [[Series/{{ER}} Randi the desk clerk]].
** TimCurry and Rob Schneider are concierges.
** JoePesci
** "[[Film/GroundhogDay Do you think it's gonna be an early spring?]]" as the Santa Kevin talks to in the first film.
** "[[TheBluesBrothers Use of unnecessary violence in the apprehension of the Blues Brothers HAS been approved.]]" Seems like that's Gangster Johnny modus operandi.
** In Spain, Kevin's dub-over artist would later become [[WesternAnimation/InvaderZim Dib]].
** In the third movie, Alex's sister is played by ScarlettJohansson. You read that right.
*** Also his mother is [[SixteenCandles Jake Ryan's girlfriend]]
** The doughnut-eating cop in the first movie is [[Series/HomeImprovement Tim the Tool Man Taylor's Halloween guy]], [[{{Series/Friends}} Weird Mr. Heckles]], and [[{{Series/Seinfeld}} the guy who played Kramer.]]
* IAmNotSpock: Macaulay Culkin is now forever associated with this role. In the commentary, he acknowledged it as both a blessing and a curse.
* TheOtherDarrin: Daniel Stern refused to go near the script of the fourth film, so Marv is played by French Stewart. And he's also dressed like Harry, for some reason.
** And, of course, the entire [=McCallister=] family is played by different actors.
*** Linnie [=McCallister=] was actually played by two different actresses, one in each of the first two films.
* [[GermansLoveDavidHasselhoff Polish Love Home Alone]]: As noted, the Home Alone films have been popular in Poland.
* RealLifeRelative:
** Kevin's younger cousin Fuller is Macaulay Culkin's little brother Kieran.
** The elf that Kevin meets before talking to Fake Santa in the first movie, and the New York airport desk clerk in the second movie was the then-wife of cinematography Julio Macat.
** A few of director Chris Columbus's relatives also appear in the first two movies as extras.
* SimilarlyNamedWorks: "Home Alone" is also the name of an unrelated public service video that shows viewers what to do if they're at home by themselves (i.e., if someone calls on the phone, don't say you're home alone, etc).
* StarMakingRole: For Macaulay Culkin.
* TechnologyMarchesOn: The first movie would last 15-20 minutes if filmed today; ''cell phones''. Both the DVD commentary and [[http://www.collegehumor.com/video:1832002 CollegeHumor]] pointed this out. Instead, the setup would have to involve CellPhonesAreUseless.
** Part of this movie's central premise is that Kevin *enjoys* being alone and feels like as it is "his house," he must defend it. The cell phone idea assumes that Kevin even has access to a cell phone; many parents do not let children under the age of 12 have one.
*** Sadly, this is not the case anymore.
* ThrowItIn[=/=]EnforcedMethodActing:
** Catherine O'Hara forgot her lines in the airplane scene where she realized that they left Kevin [[TitleDrop Home Alone]]. In fact, the iconic shouting of Kevin's name? Her attempt to salvage the take.
** The conversation with the checkout lady and Kevin in the first was improvised. The director didn't say 'Cut', so the actress kept asking him questions and Culkin went along with it.
* TypeCasting: Be honest, when have you not seen JoePesci play a criminal?
* WhatCouldHaveBeen:
** According to director Chris Columbus, and early promotion posters, the original ''Home Alone'' music score was to be composed by Bruce Broughton, who ultimately got caught up with scoring ''TheRescuersDownUnder'', and was unavailable to score ''Home Alone''.
** Also, according to Columbus, John Hughes wanted to film ''Home Alone 2'' and ''Home Alone 3'' back-to-back, but TwentiethCenturyFox declined to do so.
*** Hughes' original concept for ''Home Alone 3'' was to be about Harry and Marv doing a HeelFaceTurn, moving to the suburbs, next door to each other, raising their own families, while Kevin does a FaceHeelTurn, and is released from jail, when he decided to exact revenge on Harry and Marv.
** Creator/SigourneyWeaver was considered for the role of Kevin's forgetful mom, but didn't get it. Probably would have clashed with her protectiveness in ''Film/{{Aliens}}'' anyway.
** Harry was written with RobertDeNiro in mind.
** [[TheScrooge Uncle Frank]] was written with [[{{Cheers}} Kelsey]] [[Series/{{Frasier}} Grammer]] in mind.
** And if ''Home Alone 4'' was successful? We would've had a TV series about it on ABC Family. Within the film, Kevin's parents didn't get back together in an earlier script. The ending was rewritten in case they ended up making the show.
** In the commentary for the first film, Chris Columbus said that he had planned for ''Home Alone 3'' to be filmed right after Home Alone 2, which would've starred Macaulay Culkin again (Though it is unknown if there would be any difference between the original idea of ''Home Alone 3'' and the one starring Alex D. Linz).
** According to AMC's ''Story Notes'', Joe Pesci once said that his idea for a 3rd film would be Kevin lost in Hawaii, or a beach resort.
** Daniel Stern refused to reprise his role as Marv in the fourth film, saying it was "An insult, total garbage." ''Day-um.''
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%%% We get it, you don't like the fourth movie. Please no natter about how badly a spinoff series COULD have sucked.
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