* BeamMeUpScotty: The line is "Do ''I'' feel lucky?", not "Do ''you'' feel lucky?".
** Nor is it "Do ya feel lucky, punk?" (although that is what Eastwood said in the second film).
* DawsonCasting: It's safe to say the actress playing the (nude) 14 year old girl wasn't really 14.
* DuelingMovies: The first film with ''TheFrenchConnection'', another 1971 CowboyCop movie.
* HeyItsThatGuy:
** For ''Series/StarTrekDeepSpaceNine'' fans, Andrew "[[EnsembleDarkhorse Garak]]" Robinson plays Scorpio Killer in the first movie.
** Also, [[Film/AnimalHouse Dean Wormer]] is apparently the Mayor of San Francisco.
*** And [[Film/AnimalHouse Otter]] gets killed in ''Magnum Force''.
*** Along with [[Series/StarskyAndHutch Hutch]] and ''SpenserForHire''.
** Harry's partner Chico in the first movie is "Poppy" the pizza chef who doesn't wash his hands on ''Series/{{Seinfeld}}''.
** Before she paired up with [[Series/CagneyAndLacey Cagney, Lacey]] got her training under Dirty Harry.
** [[SuperMarioBros Mar]][[CharlesMartinet io]] is a police station reporter.
* RealLifeRelative: In the first movie, at the quarry scene in the end, Andy Robinson is taking his own stepson Steve Zachs hostage.
* TheRedStapler: Sales of Harry's iconic Smith & Wesson Model 29 [[IncrediblyLamePun shot through the roof]] after the movie's release.
** Specifically, Smith & Wesson stopped producing the Model 29 several years before the film's production. Creator/ClintEastwood himself contacted S&W representative Bob Sauer, who had several assembled from parts at the factory. Smith & Wesson reintroduced the Model 29 shortly after the film's release.
* ThrowItIn: Andy Robinson improvised several of Scorpio's lines, including the "hubba hubba" bit over the telephone and "my, that's a big one" when Harry pulls his gun in the park. The flip that Scorpio does when he is shot by Harry in the stadium was also Robinson's idea.
* WhatCouldHaveBeen: JohnWayne lobbied hard for the role of Harry but the studio felt he was too old for the part.
** FrankSinatra was intended to play Harry, but he had a broken wrist at the time and felt he could not possibly hold Harry's gun.
** The screenplay for the first film went through numerous iterations and had several potential endings, including one in which Scorpio gets dispatched by a Marine sniper rather than Harry himself. Eastwood felt that the later drafts were overcomplicating the core premise and opted for one of the earliest screenplays written instead.
** Creator/AudieMurphy was initially offered the role of the Scorpio Killer, but declined due to fears of scarring young children.
* WorkingTitle: The title of the first film's script was ''Dead Right''.
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