Corrected entry: It shown that the only entrance to the makeshift 'BatCave' is on a platform which lowers down from a cargo crate. The night after Batman apprehends Scarecrow, Alfred comes down and unlocks a padlock to enter the crate, goes down and finds Bruce stitching himself up, making it clear Bruce has been there all night. Therefore it's impossible that the crate is padlocked, as you'd need to be outside to do it and there's no other way to get into the underground lair.
Correction: The only entrance shown to the underground lair is via the cargo container, but that doesn't mean that there isn't another access point. When Alfred unlocks it, it is a very standard model of cargo container - the maximum width for such containers is eight feet. Given that the Tumbler is nine feet four inches wide, it is clear that another entrance must exist.
Correction: The reason why you hear children talking is because they are in the other school buses. The Joker timed it so that his buses would blend in with buses from schools. There are easily 12 buses in the shot, some from the robbery and some from schools - that way the cops can't tell them apart.
Corrected entry: When the Joker is in Harvey Dent's room when he is being hospitalized, one of the security guards goes into the room and asks if "she" can leave, when the Joker turns around to shoot at him, for a brief moment you can see that Harvey Dent's full face is visible, without his burns and scars.
Correction: If you look closely, you will see that only the right side of Harvey's face is completely visible. His burns are on the left side of his face.
Corrected entry: In the opening bank robbery scene when the Joker places the smoke grenade in the bank owner's mouth and drives away pulling the pin out of the grenade, when the camera cuts back to man with the smoke grenade in his mouth the pin is still in the camera shot even though it should still be moving with the bus.
Correction: The scene is correct. The pin goes away with the bus, the thing that stays on the floor is the handle for the granade.
Corrected entry: The character who has the smoke grenade in his mouth when the Joker gets on the bus at the beginning should have just spit it out and crawled off. Nobody in their right mind would have kept biting down on it waiting to have the pin pulled.
Correction: An item the size of a grenade exceeds the jaw's ability to open and remove an item (without assistance of a hand) and thus he was unable to simply spit it out. It is a matter of physical ability and not desire to do so.
Correction: The Joker is holding her face with both hands during his monologue. He grabs her face with his right hand but then uses his left hand, too.
Corrected entry: In the end of the chase for the armored car, when it leaves the tunnel, the left side of the car appears clean, without any of the bullet signs from the Joker's shots. They appear from inside when Dent is talking with a officer.
Correction: All through the chase sequence, exterior shots of the armoured car shows little sign of damage - the dark paint combined with the poor lighting means that the dents simply don't show up well. The light colour of the interior, combined with the better lighting inside the vehicle, shows up the damage better.
Corrected entry: During the opening bank robbery, the Joker is holding the gun and shooting with his left hand until he shoots the final robber. He shoots the last robber right handed and is right handed for the rest of the scene.
Correction: Where's the mistake? Many people are equally skilled with their left and right hands.
Corrected entry: During the SWAT chase on the underground street, when the Joker switches weapons and pulls out an RPG, the SWAT passenger says, "What is that, a bazooka?" It's actually a Soviet-designed RPG-7 - while most lay people might call any cylinder-shaped weapon a bazooka, a trained SWAT officer could easily tell the difference, and would have no reason to use the wrong name.
Correction: He doesn't really care what it is, only that it's big and aimed at him. It's a high-stress fast-paced situation, no matter what training he's had. Given those facts, the only remaining important factor is which rolls off the tongue easier, making his point clear to his associates quicker: "What is that? A Bazooka?!" or "What is that? A Soviet-Designed RPG-7?!"
Corrected entry: In the second scene of the movie, when Batman jumps onto Scarecrow's van as he is trying to get away, Batman leaps from the edge and the front of his body is facing a side of the van, but in the next shot when he crashes onto the van, he is facing towards the front of the van.
Correction: It is entirely possible to change your orientation when falling. Even more so if you happen to be wearing a cape. We only briefly see his initial fall, at which point it cuts to the van coming around the bend, Batman then lands facing front aligned with the vehicle. So it's completely reasonable that he simply just did a slight half spin during his free fall.
Corrected entry: When Harvey Dent is in the hospital, he can be seen to be wearing nothing but a hospital gown. However, after he leaves the hospital, he is once again wearing his burned suit. Even assuming that it had not been discarded and that he had time to locate it before the hospital collapsed, there is no way it could possibly have still been scabbed onto his burned flesh, as it was, since he had obviously had enough time in the hospital for his burns to stop oozing, or the hospital gown would have been soaked in ichor.
Correction: Harvey Dent would have been wearing his suit when he was taken to the hospital and since the staff did not discard it, they most likely would have put it in the closet in his room. As we can see in the film, it takes the Joker several minutes to blow up the hospital after he leaves Dent's room, giving him more than enough time to locate his suit. Additionally, there is nothing to indicate that the suit is "scabbed" onto his flesh because only his face and the top part of his neck were burned, both of which do not touch his suit while he is wearing it.
Corrected entry: During the bank robbery, when the bus backs into the building, the bus has an Illinois license plate.
Correction: It has a Gotham license plate, which were made for the film to very closely resemble Illinois license plates so that if any -real- Illinois plates are visible in the background, they'd match the film's Gotham plates.
Corrected entry: Joker escapes from the bank robbery by crashing a school bus into the bank, and then drives out and simply joins what appears to be a convoy of such buses driving down the street. Even assuming Joker organized the bus convoy for his benefit, people are still seen walking down the street, unconcerned by anything. There aren't even any curious onlookers. Did they all just miss a bus crashing backwards into a bank, then pulling out? Not to mention all the gunfire inside the bank, etc, some of which took place after the bus crash, which certainly did away with any soundproofing the bank had.
Correction: There is a time lapse from when the bus crashed into the bank and the initial gunfire, which would likely make the first witnesses run or hide, and the bus leaving minutes later. At this time new witnesses would be on scene, and not have witnessed the robbery or initial crash. In big cities, people tend to mind their own business. I was in a theater where a gang member was shot, people kept buying their movie tickets and popcorn as if nothing happened. Only those immediately next to the shooter had a reaction. Also, Gotham City is said to have become riddled with crime, and as such, a bank robbery may be a common occurrence.
Corrected entry: When Bruce is on his red and silver sport bike, he passes a silver Volkswagen that makes the distinctive sound of an air cooled, rear engine Beetle exhaust. The problem is that it is a New Beetle, which is front engine, liquid cooled, and has no distinguishable exhaust note like the air cooled Beetles.
Correction: This sound could actually be the engine of Bruce's sport bike, and not that of the Beetle that he passes. You can hear a faded version (since it is driving away from the camera) of the same high pitched twittering sound occur twice as the bike pulls away from the storage area between 01:00:02 and 01:00:04 in the movie.
Corrected entry: Towards the end of the Batmobile chase when the vehicle is hit by the Joker's RPG, it flips through the air. During this time the underside of the Batmobile is visible and it is completely smooth and looks bolted on, revealing that this car is merely a stunt model.
Correction: Or Fox/Batman has decided to add an extra armor plate to the bottom of the Batmobile, covering all exposed mechanical parts and reduce their vulnerability. It IS designed as a tank, after all.
Correction: We actually see him wet his fingers and move the lock of hair when he sees Rachel and says, "Well hello beautiful".