Revealing: When Robin is being pulled underwater by Ivy's plants he surfaces for air and gets pulled under again. It's obvious the film was just rewound. Then when he finaly gets free we see the shot that was rewound was the same shot used when he escapes. Really bad editing.

Continuity: When Robin steps foot into Poison Ivy's lair she is laid out on her flower bed. If you look at the sleeves of her costume, the ends of the sleeves are fringed in a simple leaf like design. Robin spurns Poison Ivy's affections, and an enfuriated Ivy pushes him into the lily pad pool. She is then confronted by Batman, and a soon to arrive Batgirl. Now - look at the huge, obvious, black rubber "thorn" bracelets that suddenly appear on each of her wrists.

Revealing: When Freeze is freezing the town, the cop car that crashed into the store has flexible icicles on the driver side door. Also when the city is being defrosted, when the cop comes out of the car, the icicles are very wobbly.

Other: When Mr. Freeze threatens to freeze all of Gotham City, he has a big snowglobe in his hand. He freezes the snowglobe, then shatters it in is hand. When he crushes it open with his hand, the inside of the snowglobe is empty. There is no water, frozen or unfrozen, that comes out of the snowglobe when it breaks.

Revealing: After Arnie freezes Robin, then freezes the doorway, then wipes his hand on the ice to wave goodbye to our hero, you can see that the clear spot is there before he wipes it with his hand.

Other: Apparently, guessing Alfred's password also turns computer monitors into projectors. Before Barbara guesses the password, none of the light/information on the monitor reflects off her, but afterwards, she might as well be a projector screen.

Continuity: When Poison Ivy is talking to herself when she is leaving the observatory, you can notice that the policemen she pushed away have vanished in the backround.

Continuity: The first confrontation with Mr. Freeze and his henchman involves them skating around a large ice covered area. The henchman are not using ice skates, but rollerblades. In the same scene we see ice skating blades pop out of Batman and Robin's boots, but when we actually see them skating, they are on rollerblades as well.

Factual error: Why is there a stellar observatory in the middle of a very large city, most of the stars would be drowned out by the city lights to the point of the observatory being useless. Also, the dome is very high up on top of a "building". Such buildings need to flex a little bit in the wind to keep them from breaking, this would make it impossible for the telescope to focus on anything for a timed exposure of film to make those neat pictures of galaxies and such.

Deliberate "mistake": When Freeze freezes the furnace after his plummet from the sky, why doesn't the pool of water that Batman puts a frozen Robin in soon after frozen?

Continuity: While fighting Mr. Freeze (and Bane) at the Gotham Observatory, Batman, Robin & Batgirl all have batsuits on, with silver bat (or robin) symbols on their chest. But while they are giving Alfred the cure to Stage 1 of McGregor's Syndrome, for some reason they have changed clothes before giving him the cure. Because now (other than the fact that they have all taken off their masks) Robin has on his original robin suit (with the red robin symbol across his chest) and Batgirl has on a gray t-shirt.

Revealing: When Batman puts a frozen Robin in the water, you can easily tell it's a dummy/model of some sort. Obviously it's not Chris O'Donnell, but it hardly looks even remotely real.

Other: The two scientists that are frozen in the observatory stay frozen for more than eleven minutes, but when Batman heats them they are in perfect state.

Other: This one is hard to describe. At the start of the movie, when Freeze and his gang are robbing the museum, Freeze looses his gun and it flies up to land on some sort of higher surface. However, it looks REALLY fake when it lands, perching right on the edge, which would be impossible for such a large weapon to do if thrown at that speed and from that angle.

Continuity: As Batman, Robin and Batgirl are heading to the Gotham Observatory to confront Mr. Freeze in their new Bat-Vehicles, a Frostbite piloting Mr. Freeze's Freezemobile meets them, crashing into two cars blocking the Freezemobile's way. The two cars the Freezemobile crashed into are gone in a later aerial shot of the Freezemobile having its freeze ray reflected back at it by Batman's shield.

Other: In the car on the way to the observatory, Pamela Eisley puts on a bob-cut, perfectly straight-haired and slightly red/pink colored wig. But when she is at the observatory, her wig is brown, has numerous fly-aways and has long bits on the sides.

Continuity: In the scene where Dr. Freeze bends down to kiss his wife right before his accident, you see a tube of some sort connected to her. Then seconds later as he kisses her the tube is gone.

Audio problem: When Mr. Freeze talks about his plan to freeze the city, he yells out "It'll be winter forever here in Gotham," but if you watch, his mouth doesn't match his voice at all through the entire sentence.

Other: When Antonio Diego is being pumped up with Venom in Dr. Woodrue's lab, the tubes attached to the prisoner's head keep disappearing. It's in the shot where the camera pans from the foot of the exam table to Diego's (Bane's) right side.

Factual error: Speaking of the insane rocket scheme: 30,000 feet is hardly "the icy cold of space" as Mr. Freeze described it to the trapped Batman. In fact, several species of birds are known to fly in the 23-27,000 foot range when migrating. Their hearts certainly don't "freeze and beat no more", else we'd probably hear a lot about all the property damage that frozen birds cause each year as they die and plummet five miles to earth.