Revealing mistake: During the transport of the POWs by train (which starts about 26 mins into the film) the number on the side of the engine is visible as 719. About 3 mins (filmwise) into the journey it appears in mirror image. It appears they filmed the train moving from right to left, but throughout the film the train moves from left to right, so the film must have been reversed. It happens twice, the second time 14 min 24 sec after the first. (00:29:34)
Character mistake: When Eric Roberts' character receives his letter at the start of the film it says "congradulations." instead of congratulations.
Continuity mistake: In the opening credits, when Smart gets inside the phone booth, the doors are not fully closed, but the immediate close-up angle shows them fully closed.
Continuity mistake: Ann visits her mother's grave at the cemetery with her father, who wipes off snow from the mother's photo on the marble. Couple of minutes later, a new shot shows the photo covered in snow again.
Other mistake: Near the end of the movie there is a montage scene of acceptance letters being printed followed by the reactions of the various people who received the letters. Despite these form letters being sent on the same day the date on some of the letters is April 11, 1988 and the date on others say April 11, 1989.
Continuity mistake: When Banner changes into Hulk in the subway station, his beard is gone. When Banner changes back after his "Hulk-out" his beard is back. (00:16:00 - 00:18:00)
Deliberate mistake: When Belloq, Dietrich, and Gobler arrive next to the destroyed Flying Wing, Eric Zala is on Dietrich's right and Gobler on Dietrich's left. In the next shot, they have switched places. This mistake actually exists at the same point in Raiders of the Lost Ark - recreating it was a deliberate choice.
Continuity mistake: John Ritter's beard goes from being real to fake throughout the movie.
Continuity mistake: When Harry throws back his arm to break the bodybuilder's front door with the crowbar, the front door and the object mounted on the wall are in the sun but as the camera changes angles where he actually finishes his swing and breaks the glass on the door, suddenly the door and object on wall are fully in the shade.
Continuity mistake: When Lucas visits Meg at the juvenile home, he carries a stuffed toy monkey by the leg. When the camera angle changes, he is holding the monkey by the neck. (01:08:15)
Continuity mistake: Tanya O'Tabby's dress sleeves come and go when she's speaking to Sam Spayed (Garfield) for the last time. (00:25:00)
Plot hole: Given the store's being bought by a retail chain like Kroger's there's no reason Bill's partner can't sell him his share in it, get half the price they're receiving for it then have Bill make quarterly payments to him. They could've also got the new owners to keep Bill on as manager as well as keep their employees or void the sale.
Continuity mistake: In the beach scene the boys are eating ice cream cones. The ice cream keeps changing size.
Visible crew/equipment: When the news reporter is about to snort the cocaine, she stops her car, turns the radio off and takes the cocaine out. When she does this you can see the top of a crew member's head reflected in her car window. (00:09:23)
Revealing mistake: When the Russians are in the Finn's trench, you see the Finns stabbing the Russians. If you look carefully, on a few of the Russians you can see protection visible. (00:48:45)
Continuity mistake: When Alex is speaking with Christopher in their dorm room she's wearing a pink top with the right shoulder down. Then it's pulled up in one shot before being back off the shoulder again.
Factual error: After the passenger door gets ripped off the Oldsmobile Toronado, a female voice is heard repeating that the "passenger door is ajar." While the Toronado was available with an optional Voice Alert system, the GM system used a male voice.
Continuity mistake: When Fuller falls to his death, the mannequin used as his stand-in gets decapitated on its way down. It even makes a loud noise. When Fuller lands, however, his head is still on his shoulders.
Revealing mistake: In the scene at the graveyard, after the Warlock assembles the Grand Grimoire and commands it to say God's true name, the fake headstone behind him starts to fall over. (01:33:02)
Suggested correction: Other headstones can be seen falling before this scene.
Character mistake: Despite being blind, Erika Breen's able to locate light switches and door knobs throughout the movie without feeling for them like a blind person would do.