Continuity mistake: When the crime bosses meet up at the casino, in the exterior shot, there are a few items on the desk including a bottle, an ash tray, a plate with a slice of pizza and a newspaper. Later, when Batman appears and punches one of the crime bosses onto the table, the bottle, ash tray and plate have suddenly moved closer to the newspaper. (00:02:00 - 00:02:28)
Continuity mistake: During Batman and Joker's fight, Batman kicks out one of Joker's teeth. Later on when Joker puts on his jet pack and starts to take off, he has all of his teeth. But in the next shot his tooth is missing again.
Continuity mistake: When Andi comes to Bruce's house for the first time and Bruce is practicing jujitsu, he trips Andi. When she hits the ground she is wearing a sweater, but before she was wearing a sleeveless blouse.
Audio problem: After Batman has left Andrea's apartment she drops a glass. We hear the sound of the glass shattering, but when the camera zooms out we see the glass is still in one piece.
Other mistake: In the scene where Andrea is being sucked into the fan at the Gotham worlds fair, Batman rides in on his motorcycle. He turns into the fan to rescue her, but his cape is flapping in the opposite direction in which the fans are sucking.
Continuity mistake: After Bruce proposes to Andrea and he drops her off at home, she is wearing the ring on her left hand when she is inside his car. But once she steps out of it, the ring completely disappears.
