* The concept is dramatized in the (fictional) soap opera within the movie ''Tootsie'', where the (female) character played by Dustin Hoffman reveals that she is a man, thus completely changing the continuity and forcing the fans to reevaluate earlier episodes.
* Being a {{prequel}}, the wham is kind of dulled since [[ForegoneConclusion we all knew it was coming]], but ''[[Film/RevengeOfTheSith Star Wars Episode III: Revenge of the Sith]]''. Anakin turning to TheDarkSide, [[TheFederation The Republic]] giving way to TheEmpire, the Jedi Order all but wiped out and the few survivors forced into hiding, Padme dead... and basically, an all-around DownerEnding.
** Creator/GeorgeLucas is known for making his movies very family friendly, and both ''Episode I'' and ''II'' have serious moments but are relatively light. ''Episode III'' features Anakin [[MoralEventHorizon slaughtering Jedi "younglings" heartlessly]], which is so vicious that it probably caught everyone off guard.
** ''Film/TheEmpireStrikesBack'' is most famous for LukeIAmYourFather and a potential TropeCodifier, but even still in this movie the only victory the heroes have was ''escaping'' by the skin of their teeth.
* The 2009 ''Film/StarTrek'' movie. The Vulcan homeworld is utterly annihilated, along with all but about 10,000 inhabitants. I mean, ''damn.''
* ''Film/TronLegacy'': Kevin Flynn reveals to his son that [[LastOfHisKind Quorra is the last surviving ISO.]]
* Each of the ''Film/{{Saw}}'' movies ends with one, but Number 3 definitely gets the prize for the death of Jigsaw.
* Trilogies ''love'' doing this, usually at the end of the middle chapter. [[TwoPartTrilogy To the extent that there's an entire trope for it.]]
** ''[[Franchise/PiratesOfTheCaribbean Pirates of the Caribbean: Dead Man's Chest]]'' ends with the death of Jack Sparrow, and the reappearance of Barbossa, who turns out to be NotQuiteDead.
** ''[[Film/TheMatrix The Matrix: Reloaded]]'' ends with Neo's [[MindScrew meeting]] with The Architect, sealing mankind's fate by choosing to save Trinity, and somehow demonstrating his powers in the real world. Oh and Smith is in the real world too. The entire second half of Revolutions contains much more wham however.
** ''[[Film/BackToTheFuture Back to the Future Part II]]'' ends with Doc Brown and the [=DeLorean=] being struck by lightning and being warped to who-knows-when. This leaves Marty stuck in the past, and the past Doc Brown is his only hope of finding the other Doc and getting [[TitleDrop back to the future]].
** ''[[Franchise/{{Terminator}} Terminator 3: Rise of the Machines]], shows that John Conner failed to prevent [[ApocalypseHow Judgment Day]] from happening, and that the Terminator sent to save him was the one who's going to kill him in the future.
** ''Film/TheDarkKnight'': Rachel is killed. Later Harvey goes off the deep end and becomes Two-Face, Batman ends up killing him, and takes the blame for all of his crimes to ensure that Harvey Dents reputation isn't destroyed and all the criminals he prosecuted stay in prison.
* How can you tell a ''Series/{{Firefly}}'' fan hasn't seen ''Film/{{Serenity}}?'' [[spoiler: They smile at Wash's "I am a leaf on the wind" line from the trailer, not knowing what comes after his final, victorious statement.]]
** The whole film goes from wham moment to wham moment... it even ''opens'' with a wham moment: ''Simon'' is the one who did the physical infiltration and rescue of the academy to get his sister out? Suddenly, everything we know about him from the series has been turned on its head (but it does give us a new insight into the episode "Ariel"). Then we learn the [[spoiler: government made the Reavers]]. Then [[spoiler: Book dies and]] the Operative kills anyone who's ever sheltered the crew just in case Mal decides to go into hiding with any of them. Then Mal turns ''Serenity'' [[spoiler: to a Reaver ship, even putting several bodies of friends they'd once known onto the ship to add to the vision]]. Then the above mentioned wham moment kicks in.
* ''Film/TransformersDarkOfTheMoon'': Not only does [[spoiler:Sentinel Prime betray the Autobots by striking a deal with the Decepticons, and Dylan Gould, Carly's boss, is revealed to be working with them]], but also [[spoiler:Cybertron is presumably annihilated by the end, making Earth their only remaining home]].
* ''Film/TheAvengers'' is this for the entire Franchise/MarvelCinematicUniverse: [[spoiler: The rest of the universe now know Earth is not as defenseless as they once assumed, with Thanos now wanting to "court Death" by challenging Earth's mightiest heroes somewhere down the line.]]
** ''Film/CaptainAmericaTheWinterSoldier'' was hyped as a game changer, and they ''weren't wrong''. Aside from the [[ItWasHisSled spoiler everyone could see coming]] ([[spoiler:That the Winter Soldier was Steve's best friend Bucky, for those who managed to avoid ThisVeryWiki and other places]]), [[spoiler:we find out that SHIELD has been infiltrated and controlled by HYDRA from its very inception, Cap, Black Widow and Falcon with the help of Nick Fury, Maria Hill and Agent 13 actually dissolve SHIELD completely, and meanwhile, Baron von Strucker has ComicBook/ScarletWitch and ComicBook/{{Quicksilver}} captive and is studying [[Film/TheAvengers Loki's scepter...]]]]
* ''WhoFramedRogerRabbit''; we know from the start that Judge Doom is the BigBad, but [[spoiler: His reveal as a {{Toon}} as well as the same one that killed Eddie's Brother]] is very definitely a shock.
* The MarvelOneShots film ''All Hail King'' reveals that [[spoiler:contrary to what ''IronMan3'' told us, there ''is'' a Mandarin, and he is ''not'' happy with what Slattery and Killian have done to his name.]]