Towards the movie's ending, Hollywood holds off several security guards with a fire-hose, hosing them down and completely soaking them for at least five minutes. However, when the water is turned off and the guards burst into the store room, all their uniforms are dry and many appear to be freshly pressed.
During the chase scene at the movie's ending, Jonathan can be seen wearing white sneakers as he runs down a flight of stairs. But in the rest of the chase scene, he is wearing the bowling shoes he has on during the rest of the movie.
Right after Hollywood informs Jonathan that all the girl mannequins are gone. The following shot shows Jonathan in the display window where Emmy was and there is still a girl mannequin in the display window.
When Richards and Felix are chasing Jonathan and Emmy on their motorcycle, the car that the two men are initially sitting in is black. But in the next few shots, the car is a completely different color - a bright green.
When Richards and Felix are chasing Jonathan and Emmy on their motorcycle through the dark streets, the road surface alternates between completely wet, completely dry and partly dry with puddles.
Emmy fires a nail-gun without depressing the safety mechanism on the front.
When Jonathan Switcher attempts to play the store's magnificent organ; watch carefully as he isn't pressing down any of the keys.
When Emmy gives Richards and Felix an obscene gesture, the mannequin, viewed from behind on the motorcycle, has a left hand on her right arm.
During the hang gliding scene, the strings are clearly visible holding it up.
Obvious stunt driver on the motorcycle trying to escape from Richards and Felix.
Both Hollywood's convertible and B.J. Wert's limousine have front plates. Pennsylvania has not used front plates for automobiles since the 1950s.
The license plate on Hollywood's convertible had Pennsylvania over the list of "Bad Girl". A real Pennsylvania plate at the time (1986-1987) would have had "You've Got a Friend" above and Pennsylvania below the plate ID. It also would have only been on the back of the vehicle.
After Emmy gives Richards and Felix an obscene gesture, Felix mouths an expletive apparently removed from the audio just before he says: "That is it! No more of this surveillance crap! Captain Felix Maxwell takes this from no mannequin!"
When Jonathan rescues Emmy at the top of the conveyor belt, the safety strap connecting his safety harness to the side panel of the conveyor is visible.
When Jonathan first meets Hollywood right after he finds Emmy as the mannequin he created, you can briefly see the camera reflected in Hollywood's sunglasses.
During the chase at the end of the movie, when Felix and Terminator first run into Jonathon and he "sicks" Terminator onto Jonathon, look to the left at the clothes on the rack, the actors playing the security guards can be seen waiting for McCarthy and Bailey to finish their scene to go to the next shot when Jonathon trips the guards and Felix up.
Emmy lived in Ancient Egypt and ends up in the 1980s yet she wouldn't have a birth certificate or anything legal so how would they explain an unregistered adult female getting married.