Factual error: Trevor - a Professor of Geology - boasts about having an article published in Scientific American, and that is not something any scientist would do. Scientific American is looked upon with slight disdain by the scientific community, considered to be a populist crowd pleaser. It is not even peer reviewed. Considering that he has just turned the geological and archaeological worlds on their heads he would have been better off publishing in Journal of Geological Research or Geology, both prestigious professional journals.
Factual error: Basic physics - Hancock throws Michel from a dead stop to above cloud level in about eleven seconds. The clouds are bog standard cumulus which form at around 7,000 metres in temperate zones. This means that Michel accelerates to about 700 metres per second instantly, from a dead stop. Obviously he cannot accelerate during his ascent, so his starting speed has to be at least that. (In fact he would have to start his ascent much, much faster than 700 metres per second as he would be constantly decelerating due to gravity and air resistance, but it will do as a start point.) Michel accelerates from 0 to 2,520 kilometres per hour - twice the speed of sound - in zero seconds. He would be accelerating at around 5000 Gs, turning him into a very long streak of fine, pink mist.
Plot hole: At the start of the movie, a great deal is made of the boom mic that enters the shot. This is ridiculous, because Bolt's view would not be restricted to what was onscreen, he'd have a perfect view of the person holding the boom mic (as evidenced by it not being stable). There's no possibility of him not seeing the person holding the mic either. As Bolt completely and utterly believes the world he lives in, and thinks the situations he finds himself in (saving Penny) are real, someone holding a boom mic would break the illusion for him. In all instances in the movie where an outside force (i.e. a dog handler) interacts with him, Bolt never gets to see the person handling him (handler approaches from behind), the boom mic operator however is literally right in front of him.
Suggested correction: He wasn't paying attention and considering that his focus was only on the "action", how the hell would he notice a boom mic when he's trying to protect Penny? His "reality" is never broken even AFTER he's in his trailer.
Factual error: After escaping the hospital, Harvey Dent wears the same charred suit he was wearing when he was brought to the hospital. That suit would not have been neatly taken off and left intact. It would have been cut off with shears so as not to accidentally remove any damaged skin and flesh when pulling the pants and shirt off. The blazer might still be intact but certainly not the pants and shirt.
Continuity mistake: During the duel between Miraz and Peter, when they call for a time out, Miraz is shown in the background walking back to his generals and stepping onto a raised area. A few seconds later, over Peter's shoulder, he again walks to the raised area and steps up (there's only one step). (01:44:55)
Other mistake: When one of the agents is ambushed by the Tooth Fairies he is reduced to a skeleton, with his teeth still visible. However, it was earlier stated that Tooth Fairies start by eating the teeth, then finish off the rest of a body.
Continuity mistake: In the scene where Hogsquel gives Jared "the sight", after he spits in his eyes Jared is holding the seeing stone, but in the next shot when he is wiping the spit from his eyes the stone is gone.
Audio problem: Right before the end credits, as Grave Robber says "But Genco may survive if it undergoes surgery", right as Grave Robber says the word "may", his lips briefly don't match what is being said. (Confirmed in DVD commentary.).
Factual error: In the very first scene a giant squid swims past Fujimoto. It swims in the wrong direction however, with its tentacles in front. In reality squid swim backwards.
Other mistake: When Dr. Pincus looks at the three laxative bottles, there's a close-up of one of the bottles. The label on the bottle reads "Take 1 tablet daily with a glass of water" and "Qty: 50". Doesn't sound like a label for a liquid solution. (I noticed this in normal playback then paused to confirm it.) (00:09:10)
Continuity mistake: When the Silent Monk and the Jade Warlord are fighting, the warlord wounds the monk in the right shoulder, next shot the bleeding wound is gone, but it reappears once again in the next shot after that.
Factual error: Benjamin leaves his family at some point after his daughter's first birthday (1970), and definitely before her second birthday. But a 1973-1977 El Camino is parked in front of their house as he rides away on his motorcycle. (02:24:15)
Continuity mistake: When Tinker Bell tries to fix the music box there is a leaf in the box, when she is done it's gone.
Continuity mistake: In the part when Lina and Doon are looking at The Book of Ember, they open it to a few pages in. But in a later shot, it shows they are near the middle of the book.
Factual error: The Moon is pushed into a "more elliptical" orbit. When the orbit it shown, it is more eccentric than the Moon's real orbit. However, it is centered directly on the Earth. This violates Kepler's first law of motion, which states that a natural satellite has the primary body at one focus of an elliptical orbit. In other words, the Moon should come much closer to the Earth at one end of the ellipse, and recede very far from it at the other end, rather than receding to the same distance in both directions.
Plot hole: In the scene where Ba'al goes through the stargate and arrives in 1939, the event horizon from the stargate puts a hole in the haul of the ship. Later when SG1 goes through the stargate the hole is covered with ice. The event horizon created from SG1 would have been the same as the previous one and removed the ice from the hole.
Continuity mistake: When Skeeter arrives at his sister Wendy's house, he walks into the kitchen and meets Patrick and Bobbi. He says he has some presents for Bobbi, and Patrick turns around and leans his arm on the back of the chair. In the next few shots his arms keeps moving from resting on the back of the chair to down in his lap.
Continuity mistake: When Kate is speaking with the angel of the Sculptor in the grocery store about what her mission is, during most of the conversation there is a woman behind the Sculptor cleaning and organizing the orange juice. After the conversation when the shot shows the Sculptor descending into heaven, all the juice jugs that were on the floor are on the shelf and the woman cleaning is no longer there.
Continuity mistake: In the scene where Lloyd is briefing his team about the events of the next few hours, there is a shot in which he says the words 'weather systems' as someone walks across the screen from the right. Immediately the camera cuts to a close-in shot of Lloyd. But right at the end of the scene, the exact same shot is shown again, minus the sound of Lloyd saying 'weather systems'.
Continuity mistake: In the scary door, the hay stack on the barn it diagonal, but when the aliens are attacking, the hay stack is vertical. (00:13:30)