The Dark Knight - Goofs
Continuity: The cooling ducts on the side of Bruce Wayne’s Lamborghini MurciĆ©lago LP640 are closed at the beginning of the scene and are open immediately following a cut. They are motorized but take time to open and close.
Continuity: In one of the first scenes with Det. Ramirez, you see her holding a cup of coffee. In between takes she switches between holding the cup with two hands, then only one hand and finally with two hands again. The cuts in the scene are immediate and linear, so she could not have changed how she holds the cup in between cuts.
Continuity: In the Hospital scene between Harvey Dent and The Joker; when The Joker holds the gun to Harvey’s head, he cocks the hammer. When the camera faces Harvey, The Joker’s finger is over the hammer, when it’s facing The Joker, it’s not.
Continuity: In the scene where Batman is beating The Joker in the holding cell, The Joker’s hands change position as Batman is pinning him to the wall. When the cameras are facing The Joker, his hands are gripping Batman’s arms from below with the fingers pointing up, whereas while the cameras face Batman, The Joker’s hands are holding Batman’s arms from above with his fingers pointing down.
Crew or equipment visible: In the final shot of the film, several non-illuminated lights can be seen at the end of the ramp. They are Bebee Night Lights, which were used to light most of the night chase scene.
Crew or equipment visible: In the opening shot of the film, the reflection of the edge of the helicopter in the building’s glass is visible on the left edge of the shot.
Continuity: When Batman is interrogating The Joker, we can see The Joker’s suspenders on his left shoulder. The scene cuts to Batman, then in the next shot of the Joker from the same angle the suspender is back under his vest and can no longer be seen.
Revealing mistakes: As Gordon walks into the interrogation cell to question The Joker, after he shuts the supposedly heavy iron door, it can be seen swinging open again in the reflection of the mirror on the right, revealing that not only did it not latch, but that it is obviously not as heavy-duty as it looks. 
Revealing mistakes: The administration building for the old Brach’s Candy factory in Chicago is used as “Gotham General Hospital”. Windows were replaced to make it look more operational for the movie. But, when the building is going up in flames, the aerial shot swings around to the one side, and you can see that windows were not replaced on the back side, and the interior of the building is gutted.
Continuity: When the seaplane lands right next to Bruce Wayne’s yacht in Hong Kong Harbor, the plane leaves a large wake, but in the cut to Bruce and Alfred talking on the yacht - which immediately follows - the wake has completely disappeared, never rolling under the boat.
Revealing mistakes: In the beginning when the school bus backs up into the bank, it hits the building hard, coming almost half way into the building. When The Joker drives it out there are no scratches or dents on the bus at all.
Continuity: When Bruce picks up one of the gauntlets being provided to him by Fox, the blades are in the closed position. Bruce opens the blades and accidentally fires them off. When he puts it back in the drawer, the blades are back on the gauntlet and again in the closed position without ever being replaced.
Continuity: (Possibly only visible in IMAX) Immediately after the Joker’s “magic trick,” there is a part of the table that is covered in dimples from the actor repeatedly stabbing the pencil into it.
Revealing mistakes: When the Joker drives the bus out of the bank and into the line of school buses, you can hear children screaming and cheering. However, if you look carefully, there is no one in any of the buses.
Continuity: In the opening bank heist sequence, after Joker shoves the grenade into the bank manager’s mouth, he proceeds to remove his mask with his right hand. In the next shot (the close-up reveal), he takes off his mask with his left hand.
Continuity: In the opening bank heist sequence, it can be observed through Joker’s mask that he does not wear any makeup on the eyelids (during the “I kill the bus-driver” line). However, in the following sequence, when he removes the mask, he can be seen wearing black makeup over his eyelids.



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