Continuity mistake: When Beaupre and Unger get smashed by the trunk of books, it shows them clearing the books off them. When they are shown again, Beaupre still has a book on his chest.
Continuity mistake: When Dupre knocks the washing basket off of the side, on top of the car, we see the basket land upside down, but in the next shot it is on its side.
Revealing mistake: When Alex is walking back from Mrs Hess' after shovelling her drive, you can see the "crooks'" car lights waiting for their Q to enter the street in the top left. (00:10:10)
Character mistake: In the opening scene where Olek Krupa is looking at flight departures at San Francisco Airport, you can briefly see two entries that say "San Frnsicso." (00:05:30)
Revealing mistake: It's obvious the snow is fake. You can see when Alex runs outside in his pajamas.
Visible crew/equipment: When Mrs. Hess' TV is off, if you look closely you can see the camera filming the shot and its stand. (00:16:40)
Visible crew/equipment: Alex fixes the TV to show a camera picture. The next scene when two of the criminals pull up in the car next to a mirror, a crew member is blatantly visible in the reflection, if you look closely on the left hand side. (00:37:10)
Continuity mistake: Alex starts turning off Mrs. Hess' TV from the attic. The ornaments in front of the TV move between shots at least twice, in consecutive shots. (00:16:35)
Continuity mistake: In the scene where Stan is bouncing his basketball, Alex's grasshopper is crawling around on the floor. Notice the bug is a brown type of a color and then when Stan squishes the grasshopper it is green on the bottom of the basketball. (00:12:58)
Suggested correction: The "insides" of grasshoppers are comprised of green body fluids. A squished grasshopper - brown or green - will look similar to how it does on the basketball that was used to squish it in the movie. What is shown may not be the precise shade of green "blood", but it is a decent rendition.
Continuity mistake: The scenes where the bad guys get into Chicago are in daylight, but when they are "chasing" the taxi cab it is nighttime.
Continuity mistake: When the police are arriving at the end of the movie (behind the snow ploughs), there is an overhead shot showing sunlight shining onto the street. Every other shot in that exact scene is otherwise grey and cloudy.
Continuity mistake: When Alex runs into the garage towards the end of the movie, we see sunlight shining in through the window. Wasn't it just grey and snowy outside?
Continuity mistake: When Alex first takes out the bubble-squirting gun and threatens Olek Krupa's character with it, the muzzle looks like what one might see on a real gun. However, when we get a closeup of it after Alex shouts at Olek Krupa and chases him away, the muzzle has a gaping hole in it, because it's a different bubble-squirting gun.
Continuity mistake: Near the beginning, Beaupre and Co. follow a taxi driver to its station and we see it park. It pulls right up to a metal fence. However, when Jurnigen and Unger approach the taxi driver a moment later we can see in the background that the fence is a good distance away from the car.
Continuity mistake: The main bad guy has Alex cornered in Mrs. Hess' garage. Look at the clear plastic cup behind Alex. One shot the cup is upright, the next it is on its side.
Continuity mistake: When the villain with the long hair is being electrocuted by the wire outside the front door, in a close up shot his ski pants are on fire, then in a further away shot, they are not, then in another close up they are on fire again. (01:03:05)
Other mistake: When Jernigan says, "Gotcha" when Alex comes into the room and Jernigan falls, it shows him falling but his expression doesn't seem like he is actually scared.
Audio problem: When the police are called for the first time, two officers burst into the house and are confronted by a dog. The alarm strangely stops three seconds after bursting in. (00:23:50)
Audio problem: When Mr. Unger is being led away after his arrest, watch - he's looking at the policeman holding his arm, talking and making gestures with his hands...yet there's no sound that goes with it.
