Factual error: Throughout the movie, we can hear Ash's motorcycle shift gears, but we can see that his hands never disengage the clutch, a must do for a smooth shift like we hear.
Other mistake: Just as the gang are off to pick the plants they need Faith goes off to talk to Daniel. While she's there the others woop and laugh, but they do it once and it's recorded. It's played 3 more times, straight after each other. Sounds slightly stupid.
Continuity mistake: There is one scene at a party where a guy drives off in a car. When he gets into the car, it is facing up the driveway with another car in front of it. When he drives off he drives straight ahead, without reversing down the driveway.
Continuity mistake: In the early scene at the diner, after Paul sits down at the table, his insulated mug changes from in his hands to at his sides and turns itself after he leaves. (00:06:50)
Continuity mistake: When Billy finds his old friend outside of the hotel, he has a grey sweater on. Then when they go into the hotel room, his sweater is green.
Audio problem: When Sgt. Henshaw is telling the platoon to get rid of the horse, he is speaking but it's clear his mouth isn't moving.
Continuity mistake: In one scene, in the middle of the movie, one of the older players is sitting in a chair near the basketball court, and he is wearing sweat pants, white ones I believe. He is then asked to come in to play by Eddie (Whoopi Goldberg). He then stands up. But in the next scene he is walking up to the other players on the basketball court taking off a light jacket, but no sweat pants.
Continuity mistake: In the scene where Jjaks and Freddie escape and are driving in the red car, she opens the bottle of champagne and takes a drink with her right hand then hands it to Jjaks with the same right hand, but when the camera cuts to Jjaks, she is handing it with her left hand.
Continuity mistake: When Jessica confronts Dr. Fenistone in the doorway, which shoulder her ponytail hangs over changes between shots through the scene. (00:55:55)
Continuity mistake: In one scene, Zane disturbs a lecture on terraforming at JPL and gets thrown out by security guards. Later on in the movie, somewhere in a Mexican bar, Zane and Ilana are discussing global warming. In a flashback Zane remembers the lecture at JPL. Strange thing, however, he can even remember a part of the lecture which was given at a time when he had already been thrown out.
Continuity mistake: When James gets involved in his first car crash, his car goes out of control and just swerves past the first oncoming car, then he starts to swerve towards the side railings, but in the next shot, the car starts to swerve towards the railings again just before it hits the oncoming car.
Plot hole: When the monster sinks the boat, there is an underwater shot of the crew drowning. As one of them is struggling to the surface, a bottle of Bells whiskey sinks past him. The bottle is only one-third full, and the top is screwed on, so the bottle should float on the surface, even without a message in it.
Continuity mistake: The terrorist blow up many Jeeps when they ambush the military in the opening scenes. The problem is, they blow up more Jeeps than are in the convoy. When the terrorists steal the truck that was being escorted by the military convoy, we can see there were 3 Jeeps. But during the ambush scene, there are a lot more than that blown up by terrorists using weapons.
Continuity mistake: In the scene where Jasmine is about to walk down the isle for the first time, birds fly down with a white carpet. In the shot where Jasmine walks down the isle, the carpet is gone.
Continuity mistake: In the scene where Ben Stiller, Patricia Arquette and Tea Leoni go to visit Ben's adoptive parents, Mary Tyler Moore and George Segal. Mary and George get into an argument and Mary picks up the 3/4 Brie cheese wheel and chases George into the other room. Cut to Ben yelling at them. Then back to them, the brie wheel now much smaller. Then cut again and the brie wheel is back to 3/4 size when they return to the living room.
Factual error: In the infamous Highland bus scene, the driver can be seen issuing tickets from a computerised ticketing machine - astonishing really - the film is set in the early 70s.
Continuity mistake: When the roaches are watching Joe and Lily make out on the couch, there are a few roaches swinging in the lamp. When the lamp tips over onto Lily, there are far more roaches that spill onto her than were on the lamp.
Revealing mistake: Throughout the movie the rescue helicopter changes. The paint job remains the same but they're two entirely different choppers. This can be most easily seen by the flat single-pane windshield of one and the round wrap-around windshield of the other.
Continuity mistake: When Ricki Lake attends the 1st dinner with her mother in law, the servant puts an asparagus and some kind of a red thing on ricki's plate. In the next few shots, the red thing has disappeared. In the next scene, it is back on her plate.
Factual error: When Xander's thugs are taking the Phantom up to the roof to do away with him, he breaks away and ducks into the machinery room for the elevator. In the scene the door of the room is lockable from the inside only. This door should be lockable from only the outside.