* AcclaimedFlop: Critics and audiences love the film to pieces, but the box office numbers do not reflect this, mostly due to the [[InvisibleAdvertising lack of marketing]] by Warner Bros. The studio later did a 180 and gave it a marketing blitz on home video instead, and the movie's [[VindicatedByHistory gathered a large cult following since then]]. Much of its following also comes from Creator/CartoonNetwork, which used to run the film in annual [[MarathonRunning all-day marathons]] on Thanksgiving.
* ActorAllusion: Kent Mansley's reaction to finding half his car missing is identical to [[Film/HappyGilmore Shooter McGavin's reaction to seeing the giant Mr. Larson.]]
* AdoredByTheNetwork: Cartoon Network was rather infamous for their annual 24-hour marathons of this movie in the early 2000s, which led to the movie gaining a cult following. Creator/TheHub quite likes to air it, too. Not to mention the guys who work on the [[WesternAnimation/TransformersPrime other super-popular show]] state it was an influence on the friendship between the Autobots and the humans.
** Supposedly the network adoration was mandated by Ted Turner himself, who saw the film for an in-flight movie and declared it one of the best films he'd ever seen.
* ApprovalOfGod: Ted Hughs, author of book this movie is based on, absolutely adored the movie. Sadly, [[AuthorExistenceFailure he didn't live to see it completed]].
* BoxOfficeBomb: Sadly. ''The Iron Giant'' had a $70 million budget, but didn't make it to half that in theaters.
* DoingItForTheArt: A new rendering software was created specifically for the CGI giant to give him small imperfections so as to blend better with the 2D characters.
** The montage of Mansley grilling Hogarth about the Giant required new layouts and backgrounds to be created for every single cut, many of which last ''less than a second!''
* EnforcedMethodActing: Director Creator/BradBird made Eli Marienthal (the voice of Hogarth) run laps around the studio in order to sound realistically out-of-breath for one scene (he did this again later with Spencer Fox, the voice of Dash, in WesternAnimation/TheIncredibles).
* FanNickname: "Hog Hug", used by some fans to refer to Hogarth because of one scene.
* HeyItsThatVoice
** [[Film/TheFastAndTheFurious Dominic Toretto]] is the Giant.
*** He later became [[Film/GuardiansOfTheGalaxy an space hero]].
** [[Series/{{Friends}} Rachel Green]] is Hogarth's mom.
** [[Film/HappyGilmore Shooter McGavin]] is now a {{Jerkass}} working for the government.
** Is [[Film/HopeFloats Harry Connick Jr playing]] ''himself?'' [[InkSuitActor Yes.]]
** [[Series/{{Frasier}} Martin Crane]] is General Rogard.
** Hardcore Disney animation fans will recognize [[Creator/DisneysNineOldMen Frank Thomas and Ollie Johnston]] are the railroad workers.
** [[Series/{{TheMaryTylerMooreShow}} Phyllis Lindstrom]] made a cameo as Hogarth's teacher.
* InvisibleAdvertising: For the theatrical release; it got much better treatment on home video.
* LargeHam: Creator/ChristopherMcDonald as Kent Mansley. All the sudden yelling, outbursts, & ranting. What else can you expect?
* RealLife: The coordinates transmitted to the ''Nautilus'' are in Maine. The towns of Milbridge, Cherryfield, Harrington, Addison, and Jonesport are nearby, but the actual spot specified is a wooded area near the Atlantic coast.
* ThrowItIn: The witness calling Agent Mansley "[[AccidentalMisnaming Mr. Manly]]" was actually a mistake by the actor, but they kept it in because it added to the gag of Mansley being a NoRespectGuy.
* WhatCouldHaveBeen: The first choice to voice the giant was Creator/PeterCullen. That's right, [[Franchise/{{Transformers}} Optimus Effing Prime]] would have been the voice of the Iron Giant.
** The movie was originally conceived as an AnimatedAdaptation of [[Music/TheWho Pete Townshend]]'s RockOpera based on the original book.
** There was originally going to be a brief flashback in which the audience would see a few vague details about the Giant's origins, but it was ultimately scrapped. The idea was to have a scene where he dreams about the [[AbsentAliens alien factory]] where he was built (and destroying an alien world with an army of other robots), and to have the dream transmitted electronically to Dean's television for the audience to see. The scene was never fully animated, but the storyboard animatic can be seen [[http://www.youtube.com/watch?v=05XM9huSWNU here]].
* TheWikiRule: [[http://irongiant.wikia.com/wiki/Iron_Giant_Wiki Here]] is the wiki site for the movie.
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