* CriticalDissonance: The movies were never popular with critics, yet they always had a rabid fanbase willing to have the movies do gangbusters at the box office. Or at least until ''Franchise/ParanormalActivity'' came out, and consequently [[FranchiseKiller made the]] [[DeaderThanDisco series passť]]. How passť, you ask? The tenth anniversary rerelease of the first film ''[[BoxOfficeBomb tanked]] [[EpicFail hard]]'' [[http://boxofficemojo.com/news/?id=3950&p=.htm at the box office,]] [[MedalOfDishonor receiving the third-lowest grossing opening weekend for a film released at over two thousand theaters]] (only ''WesternAnimation/{{Delgo}}'' and ''Film/TheOogielovesInTheBigBalloonAdventure'' having done worse).
* ExecutiveMeddling:
** ''Saw III'' was intended by the writers to be the swan song for the series. The producers wanted more sequels, and had the writers thus make changes to the film to leave room open for future installments. Many of these were fairly minor, such as a shot of Jigsaw pouring wax over a tape that later played into ''Saw IV''. The biggest change, however, was that of Eric Matthews' death. In the original cut, Amanda was supposed to have stabbed him in the neck with a knife, solidifying her transition to a full-out murderer killing out of malice (she had previously killed Adam as a way of mercy-killing). The producers forced director Darren Lynn Bousman to cut it out to leave room for Matthews' return in a later sequel. Thus, the scene now ends abruptly with Amanda simply walking over towards Matthews, and an ADR line of Jigsaw later saying to Amanda that she had merely left him for dead was added. Keep in mind that Donnie Wahlberg (the actor playing Eric) only showed up for ''Saw III'' with the promise that he would be killed off, so he was pretty pissed off when they cut out his scene. Darren had to beg him to come back for ''Saw IV''.
** A massively cunning, yet very dickish move by Lionsgate and Twisted Pictures, happened two weeks before the shooting of ''Saw VII'' began - they contractually forced the director of ''Saw VI'', Kevin Greutert, to return and direct ''Saw VII'' while having David Hackl, the original director, shifted over to a yet-unconfirmed Lionsgate movie. This was due to the fact that Greutert was originally set to direct the sequel to ''ParanormalActivity'', which is scheduled to be released on the same date as ''Saw VII'' in a similar situation to how the original film contended with ''Saw VI'' in 2009. Needless to say, both Greutert and Hackl didn't take that move very well.
* FakeAmerican: From the first film, both Adam and Lawrence, played by the Australian Leigh Whannell and the English Cary Elwes, respectively. The former maintains his accent [[OohMeAccentsSlipping substantially better than the latter.]]
** Costas Mandylor who plays Hoffman in ''Saw III'' to ''Saw VII'' is also Australian and impressively, his accent never slips noticeably ''once'' throughout the five movies.
* HeyItsThatVoice: [[VideoGame/Left4Dead Zoey and Louis]] portray Amanda and Tapp in this game. Louis returns to voice the senior Tapp in the sequel.
** In the Japanese dub, [[TaroIshida Jigsaw is]] is [[Manga/{{Akira}} Colonel Shikishima]].
* HeyItsThatGuy:
** What the hell is [[Series/GilmoreGirls Luke]] doing in ''Saw IV'' and ''V''?
** Benjamin Linus of ''Series/{{Lost}}'' in ''Saw I''. Pity he never got to meet up with Miles. Or of [[SeventhHeaven Lucy Camden]] in ''Saw II''.
** Wait, when did [[Series/PicketFences Kenny]] become such an evil bastard?
** The president from [[Film/TwoThousandTwelve 2012]] is racing against time to save [[Film/ThePrincessBride Westley/Dread Pirate Roberts]] from the record store owner from ''{{Seinfeld}}''. Jigsaw is also the guy who gets his ass kicked Clint Eastwood style in ''Film/InTheLineOfFire''.
** The second through fourth films have [[NewKidsOnTheBlock one of the New Kids on the Block]].
** How did [[Series/TwentyFour Morris]] end up as a journalist?
** When did [[Series/ReGenesis David]] become head of an insurance company?
** [[Series/FamilyMatters Eddie]]... erm, Dave, took the ''wrong'' job.
** Aaron was in ''Series/TheTudors'', Shelby in ''Series/MutantX'' and Josh [[Film/K19TheWidowMaker got]] [[Film/UrbanLegend around]].
** I suppose [[{{Becker}} Linda]] got tired of being a nurse and started taking drugs.
** Looks like [[Film/TheBoondockSaints Connor]] retired from being a vigilante saint to become a self-help guru.
** Looks like [[Film/{{Scream 4}} Robbie Mercer]] can't stop getting into trouble with killers.
** Run! Dr. Gordon's lawyer is a [[Series/{{Supernatural}} leviathan]]!
* IKnewIt: In ''Saw 3D'', it's revealed that [[spoiler: Dr. Gordon survived the first film and had been disciple of Jigsaw working behind the scenes since then. Some fans theorized this originally based on a brief part of the video shown to the key-behind-the-eye victim in Saw II. A cloaked figure with a limp (assumed later to be Jigsaw) is seen next to an operating table. ''Saw 3D'' reveals that this WAS in fact Dr. Gordon.]]
* MeanCharacterNiceActor: If you watch the behind the scenes featurette, Frankie G (who played the murderous drug dealer Xavier in ''Saw II'') is a really nice guy.
** It's the same with Costas Mandylor - he plays, arguably, the most sadistic character in the whole franchise (Hoffman) but in contrast [[https://www.youtube.com/watch?v=P-DKdOuZTMs seems like a very down to earth, funny guy in reality]]. He's also reported to be very friendly and approachable with fans.
* NamesTheSame: Two of the films feature a character named Dan Erickson. Another Dan Erickson was one of the main cast in ''Series/LandOfTheGiants''.
* PromotedFanboy: [[LinkinPark Chester Bennington]] was a huge fan of the series long before he got a role in ''Saw 3D''.
* ViralMarketing: With ''Saw 3D'' being the last film, they finally did an ARG of [[spoiler:Bobby and his Survivors of Jigsaw, including those whose fate was left hanging like Dr. Gordon]].
* WhatCouldHaveBeen:
** The first film underwent some significant changes in trap design and deaths. Among them, Mark (who dies from the flammable jelly) was supposed to die from poison after using his arm for a torch, the victim of the "Razor Wire Maze" was originally condemned for his greed (in the finished film, Jigsaw is punishing him for attempting suicide despite living a satisfying life), and the victim of the Drill Trap dies in the script but is saved in the finished movie.
** Originally, Evan, the racist skinhead played by Chesterr Bennington, was meant to live through the Horsepower Trap. But because Bennington was under a very tight schedule at the time, and only had the one day for shooting, the filmmakers didn't have time to shoot his hospital scene, and Evan was rewritten to having died.
** Apparently, the original story in the first ''Saw'' game involved a one [[spoiler: Dr. Gordon]] that you would encounter toward the end and get clues about throughout the duration of the game, but upon review by Lionsgate (after the game was nearly complete), they nixed the idea because [[spoiler: they had plans for Dr. Gordon in the seventh ''Saw'' film]]. This caused the ending to be retroactively changed to instead involve [[spoiler: Melissa, a character encountered earlier in the game, allowing already existing character artwork to be used rather than scrambling to create a brand new character at the last second]].
** It's also been revealed recently that the first ''Saw'' game had to be resubmitted to ratings boards several times, toning down the gore, until finally passing with an M (Mature) rating. In fact, if you look closely at the PAL version of the game for Europe, you'll notice the gory trap cut scenes are edited differently from the North American version. Europe was apparently a little more lenient with what the developers could get away with, but even that edit of the game was toned way down from the developer's original, much gorier, intentions.
** Dr. Lawrence Gordon was originally supposed to appear in the first video game to act as MrExposition.
* WordOfGod: According to the writers' commentary track on the ''Saw: The Final Chapter'' DVD, [[spoiler:the two men with Dr. Gordon when he captures Hoffman at the end of the film are Brad and Ryan, the two surviving parties of the trap that started the film.]]
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