Continuity mistake: When Ben Jordan and Stan are walking around the fountain, they walk past a long glass railing. The white sneakers of the cameraman can be seen in the reflection on the glass. You know it's him because he stops walking when they stop and continues walking when they do.
Visible crew/equipment: In the scene where Sean Penn is playing with the big band fronted by the female singer, there is a microphone on a boom visible top center of the frame, when the camera does a pullback to show the whole band at the song's end. (VHS version.)
Factual error: In one scene Alvin is driving over a bridge on the Mississippi. He is going in to Prarie Du Chine but the bridge is in a different town, and he is going from east to west not west to east. The town he is driving into is Lansing, Iowa.
Audio problem: When Alex is appointed head of Netforce, he looks down for a moment and says, "I don't know what to say." And then looks back up. His mouth is in clear view the full shot, yet never moves once during this line and is completely shut. The audio was just dubbed over the footage in post. (00:23:25)
Character mistake: When Amy goes to Virgil's house to apologize, Virgil tells Amy that the tree is exactly 14 steps away. However he then leads her there by taking 17 steps.
Deliberate mistake: In the scene where Alicia Silverstone and Dave Foley are in the porno store, they cut to a guy standing behind a counter. All of the explicit shots of the videotape covers on the countertop are blurred out.
Continuity mistake: When Miss Hannigan, Rooster and Lily are singing "Easy Street" outside in the street, Miss Hannigan beats her fur shawl on the ground, and a large piece of fur falls off it. In the next shot, this piece isn't lying on the ground anymore. (00:50:55)
Factual error: The story takes place in the Pacific Northwest (Vancouver) in November and December. Washington may be known as the "Evergreen State", but there are still numerous deciduous trees - and deciduous trees have leaves that change color in Autumn (yellow, orange, red) and then shed (fall off), not stay green through December or into the new year.
Factual error: In any number of scenes in this movie characters are seen wearing celluloid badges in support of statehood for Wyoming. This movie is set in the year 1890 and the process of making celluloid badges wasn't developed until 1896.
Continuity mistake: When the kids enter their home soaking wet and run to their father on the first floor, the cigarette in his mouth disappears/reappears between shots.
Continuity mistake: During the scene when they are trying to bring Mr. Leniog into the rear of the door we hear them trying to open the door from the inside, shaking it rather violently. From the outside shots we hear the door rattling but it's not moving at all like it is from the inside shots.
Visible crew/equipment: Mini boom mike type thing appears in shot just as the real killer clown is walking onto the stage about to kill Kate. It is visible when he turns to face the 'audience' in the lower right hand corner.
Continuity mistake: As Admiral Wilson on the Pegasus base fires his weapon on the glass window that protects the Navigation A.I. it doesn't gets a scratch. In the next shot he starts to hit the glass with the rifle's stock and a large grey stain have appeared on the glass, only to have vanished next time the glass is shown.
Deliberate mistake: At about 1 hour 24 minutes, when Tom Sizemore is looking in the mirror, his injured lip goes from original right side to left side.
Revealing mistake: When the wishmaster stands up, the camera pans down to the glowing red gem on the floor. You can tell a crew member is shaking the thin piece of "flooring" to make the gem move.
Continuity mistake: When Indiana Jones and the five old men have rescued the other old man, the explosives destroy the final carriage which is right at the back of the train, but when the train crosses the metal bridge there are now more carriages behind the destroyed one.
Plot hole: As the Spanish fleet looms out of the fog, Hornblower is able to identify individual ships, a remarkable feat since every ship is wearing the same paint job.
Factual error: Many of the French soldiers have American accents.
Visible crew/equipment: When the housekeeper says goodbye to Shigeharu you can see the boom microphone on the right side of the screen. Next to the light hanging above the dinner table. (00:16:42)