Plot hole: At the climax of the movie, the bully reveals Link to be a caveman by among other things, breaking into the High School and stealing his student registration papers, containing among other refuse, the vaccination license of a dog. Problem is, wouldn't the school staff have already checked those at the start of Link's time as a student?
Plot hole: In the river scene, Betameche states that his pocket knife doesn't have rope, as it's only available on the smaller model. Yet, around 10 minutes later, Princess Selinia is pulling a retracting rope from the pocket knife, allowing them to abseil down. (00:45:00 - 01:00:00)
Plot hole: During the supercomputer's destruction, the 3 electrical probes that are sending lightning to the overhead pylons to draw electricity from them are no longer flashing. So where is the electricity coming from to sustain the computer's lighting system as the fluorescent tubes are still working?
Plot hole: Why is that shark machine even there? The only reason it's there is to help the plot, and I don't see how it is of use to anyone in the corporate world. If the shark just ejects the fish it turns into fish heads out to sea, there is too much chance they will be ruined by carnivorous fish or weather before they are picked up. And fishing companies should know better.
Plot hole: Aladdin and Zamir plan how to infiltrate the castle. There's a window that "seems particularly inviting" in their words. "A man standing on another man's shoulders should be able to make it without effort", Zamir says. So we see Aladdin land inside. And then, Zamir. Whose shoulders did Zamir climb to make the jump? It was just the two of them. (00:59:40)
Plot hole: The pipe bomb that Maggie uses to kill Freddy is the same one that was found in Spencer's room earlier in the film. It's already been established that Freddy was erasing the people he's been killing from existence, so that pipe bomb wouldn't be there to use on Freddy.
Plot hole: At the very beginning, as the passenger ship is foundering in a powerful storm, the little boy places his kitten in a box and tucks the box inside his shirt just moments before he is cast into the churning sea. Sinking into the depths, the boy and other passengers are presently rescued by Captain Nemo's team of divers, who supply the drowning passengers with oxygen until they board the submarine Nautilus. Once aboard, the little boy opens his hidden box to reveal a wet but very much alive kitten that could not possibly have survived submersion for that length of time in a box that was not waterproof.
Plot hole: Blind Master can sense when a person is lying. When Snake Eyes admits he is not pure of heart he explains this is because he is driven by his desire for revenge on his father's killer, which Blind Master reads as a truth. However, this is still a lie: a lie of omission. Snake Eyes is only telling part of the truth and omits the fact he is betraying the clan on Kenta's behalf to get his revenge. Snake Eyes is being deliberately deceptive, which is the definition of lying.
Plot hole: If the curse counts an eclipse as night, then Navarre should have turned into a wolf during the eclipse. If the curse does not count the eclipse as night, then Isabeau should have remained a hawk. In neither case would they both have been human at the same time.
Suggested correction: That is the whole point; it is neither day nor is it night. Each only suffers the curse when it is specifically day or specifically night. Any time it is not one of those two events, the curse is not active, as shown earlier in the movie when both are human for seconds during a time in between day and night.
Plot hole: I can somewhat understand that in a kiddies' show all aliens can inexplicably speak English - but using Terranean (i.e.: Arabian) numbers as well? While Tetrax's computer uses alien runes, the readout on Gluto's holographic HUDs use Arabic numbers - somewhat a bit too deliberate a producer choice to emphasize intergalactic communication.
Plot hole: Although this film is a virtual jigsaw puzzle of flashbacks, the dynamic between Dan, Laurie and Rorschach pretty much defines the movie's continuity in the present. However, when Rorschach is framed for murder and arrested, he goes directly to a maximum-security prison, apparently without trial, conviction or sentencing (all of which would require months of due-process, at least). Even if this lapse of time is some sort of artistic device to rapidly advance Rorschach's story, there is no corresponding lapse of months in the relationship between Dan and Laurie, which runs parallel with Rorschach's story. Either there is no due process for Rorschach in this story, or there is a glaring plot hole.
Suggested correction: Rorschach was a famous and dangerous outlaw. We are talking about an alternate 80's here with Nixon as president and a nation-wide ban on masks (the Keene Act). Rorschach probably faced the death penalty for his long list of crimes, besides the murder he was finally captured for (not to mention to handful of cops he seriously injured whilst trying to evade capture). I don't think it's strange that his trial was quick or not fully by the book. They made sure he was locked away fast and quietly. The justice system probably works a lot faster in a world of masked vigilantes.
Yes, Rorschach was a vigilante; but, before masked superheroes were outlawed, Rorschach was also responsible for sending dozens (if not scores) of far worse criminals to prison, thus benefitting society. This much is stated in the film. His contributions to justice would certainly carry weight, and testimony in his favor would have to be considered in any legal proceedings against him. Also, after his capture, authorities were still trying to assess his mental state, which implies that some sort of due-process was still in place. Rorschach should have received a months-long trial, at the very least.
To be fair, the original, Hugo Award-winning "Watchmen" graphic novel makes the same continuity leap when it comes to Rorschach's fate. Rorschach keeps a secret diary that dates everything, but it egregiously skips over his trial and sentencing, even though the relationship between Dan and Laurie remains consistent. So, we can say that the movie is faithful to the novel, but the novel itself is flawed with a gaping plot hole.
The cops of that city don't care about his past deeds, which includes dropping the body of a criminal in front of the police station with the message "Never." They don't like him. Not even his colleagues liked him. That was a long time ago too, he's been the sole masked vigilante for a long time and I bet the cops just started disliking him more and more for his antics. Thus, a quick trial.
Plot hole: In the waning seconds of the championship game, the Huskies are down by 2 and UMass has the ball. Not only do the Huskies not intentionally foul to stop the clock, but UMass attempts to run a play and set up a basket when they simply could have dribbled out the clock and won the game. Both these strategies go against what any basketball team would do in this situation, especially in a championship game.