Revealing mistake: When Bella calls Rosalie, you can briefly see the cell phone screen before she puts it to her ear. The lock screen is still visible, showing she didn't dial anything. (00:55:45)
Revealing mistake: At the start, just as Moreau rides up the stone road leading to the monastery up ahead, before he passes the two guards we can see that it's a flipped shot - note the backwards license plate number.
Revealing mistake: In the scene where Harry and co. are in the Room of Requirement, at several points during this scene, you can tell by the way the light shines that Harry's glasses are missing their lenses, especially in close up shots of Harry.
Revealing mistake: When Blackbeard threatens Jack with a pistol, he is heard cocking it, but when he holds it up to the camera we can see that it is only on half-cock. A pistol cannot be fired in the half-cock position, nor can it be loaded in the fired position, implying that either it is not loaded, or a technical error has been made by the film makers.
Revealing mistake: When E.B. Is drumming along to Dynamite at the "Hoff Knows Talent" audition there is an audible bass drum beat but via several overhead shots you can see that E.B.'s feet do not reach either the bass drum or hi-hat pedals.
Revealing mistake: When Sweet Pea, Rocket and Blondie are sitting in front of their mirrors and discussing how Babydoll saved Rocket from the cook, the camera starts behind them, pans to the left, through the mirrors and out the other side. Before the camera passes through the mirrors, if you look closely at the girls' backs, you can see that they are slightly out of sync with their 'reflections'; it is obvious they used doubles to sit with their backs to the camera and copy the actual actresses.
Revealing mistake: When the kids see the moon picture on the book, an old, chubby hand lays on the page, obviously not the kids'. When the angle changes, their small thin hands re-appear.
Revealing mistake: When Donovan witnesses a fatal traffic accident on a rainy night, he suffers a mild heart attack and collapses in the street. Although he's lying on his back, unprotected from the downpour, surrounded by rain striking the pavement in both foreground and background, closeups show that no rain strikes his face, his felt hat, or his clothing. (00:12:20 - 00:12:50)
Revealing mistake: When the LG billboard changes to the blue moon ad, the LG billboard is still visible on a reflection on the glass on the front of the MTV studios building.