* BestKnownForTheFanservice: Yep, you guessed it: by ''far'' the most talked-about scene is the underwater nude ballet.
* BigLippedAlligatorMoment:
** The nude ballet scene. The Italian aria just adds to the [[strike: weirdness]] awesome.
** The infamous GroinAttack. Could also be seen as {{Narm}} assuming it was meant to be dramatic.
** The lizard-like creature that appears in the original. It's presumably another government experiment, but never explained.
* CrossesTheLineTwice: They took my [[spoiler:penis]]!
* DudeNotFunny: Most of the gore in the first movie went from exaggerated to this for some viewers due to how realistic it is. The massacre at the lake can be pretty hard to sit through. At least the trailers made it look like it was going to be more horrifying if anything.
* EnsembleDarkHorse:
** In just two short scenes Christopher Lloyd manages to upstage everybody else in the film.
** Kelly Brooks's character, Danni, is pretty much the fan favorite of the film.
* NightmareFuel:
** The piranhas from the original looked like props and did kind of look ghoulish. Here, they look positively demonic...and there's a good chance that they HATE you as well as want you for food. The last shot of one of the trailers can attest.
** The massacre. Words do not do justice. And the second film had them attacking a waterpark!
* SoBadItsGood: A likely intentional example of this with both this and ''3DD''.
* SpecialEffectsFailure: The gore in the 3D remake. Almost inverted; a lot of the time it comes across as ''too'' realistic, [[NightmareFuel which makes it more disturbing than]] BloodyHilarious.
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