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When Paul Blart is trying to run through the glass doors to pick up a birthday card, his radio is secured on his right shoulder. When he falls backward the radio falls off, but directly in the next shot it's back on his shoulder.

When Paul is playing "Detroit Rock City" in the arcade, across the mall is a store called "Garner's Furniture." However, in every scene afterwards, this store is replaced with a "Sony Style" store, which is where Paul first discovers Veck's henchmen.

In the scene where Blart is on the roof with one of the suspects, the suspect takes the cell phone from Blart and never gives it back. In the next scene, Blart has the cellphone back on his belt.

When Paul tells the kids not to throw the balls, the boy in the green shirt and gray hoodie throws an orange ball, but a red ball hits Paul, not an orange one.

Because the movie was filmed at two completely different Massachusetts malls (Burlington Mall and South Shore Plaza), the interior architecture of the West Orange Pavilion Mall visibly changes back and forth throughout the movie.

At the beginning of the movie at the New Jersey police academy, Paul Blart has a mustache. In that academy, facial hair on all recruits is not permitted.

All of the police vehicles in the movie are shown with all blue emergency lights. In New Jersey the display of blue lights exclusively is reserved for volunteer firefighters and volunteer EMS personal vehicles. A New Jersey driver would recognize the minivan with the blue throw light Paul and Jimmy were driving as a volunteer responding to a call, not a police vehicle.

Paul Blart is playing the guitar and microphone for Rock Band (2007) in an arcade. While the microphone can be used as a tambourine or cowbell, the television screen shows somebody is tapping the microphone, but nobody is near the microphone.

New Jersey State Police vehicles are white with a blue and gold stripe descending diagonally from the upper left hand corner to the lower right hand corner of the door (driver side door) with a gold triangle with New Jersey State Police in blue letters inside of it.

The criminals' getaway vehicle, the water and power van, has the NJ inspection sticker on the passenger side corner of the windshield when it should be on the driver's side.

When Paul is in American Joe's participating in the nacho eating contest, he grabs a glass with ice in it to pour a drink. After he pours the drink, the "ice" stays on the bottom of the glass, as the cubes were likely made out of glass.

The movie was supposed to be taking place at the West Orange Pavilion Mall in New Jersey during the Christmas shopping season. Several windows depicted bathing suits, bikinis and even summer wear in their windows, along with beach towels, (part of the movie was filmed at the Burlington (MA) Mall during the summer), whereas other stores, such as Macy's had window displays of Christmas and New Year's Eve apparel in their windows.

Although set in late November in New Jersey, in many shots people are wearing summer t-shirts outside for extended periods of time. It would be too cold for this there at that time of year.

When Paul grabs different things to get ready for his ambush on the bad guys in the Safari Resauturant, he drives by the card shop several times. Each time he drives by, "Bath and Body Works" in the background is reversed, reading backwards. When he finally rams into the doors to crash through, they are on the other side of the screen, in the correct reading order - revealing that they flipped the shot when editing the film.

When Paul is in the elevator and a bad guy smashes through the window, the glass breaks into large, sharp and seemingly very thin pieces. For safety reasons the elevator would actually have tempered glass, which breaks into thousands of small chunks and the glass would be much thicker.

Paul's daughter would not be able to access the mall when SWAT have it surrounded. They wouldn't be letting anyone else in till the situation was over. She got straight in on her access card.

In the scene where Chief Brooks hands Sgt. Howard the notebook with a list of clever comebacks, the hand that takes the notebook appears far too old to be Adam Ferrara's. According to the DVD/Blu-ray commentary, that hand is in fact producer Barry Bernardi's.

After Paul crashes into the minivan, a thin wire is visible attached to the Segway's handlebars as it turns the Segway away from the minivan and it starts to move on its own.

Legal Seafood is seen twice as a restaurant at the mall. There is no Legal Seafood restaurant in West Orange, New Jersey, according the the chain's website. There are many, however, in Massachusetts where this movie was filmed.

When Pahud calls Paul the first time, Pahud pulls up a map revealing that the mall's location is actually in New Jersey's capital city of Trenton, as it is just down the street from Cadwalader Park, which is a real-life park in Trenton, very close to the southwestern Jersey border. West Orange is located in Essex County, in northeastern Jersey.

There is no enclosed shopping mall in West Orange, New Jersey. West Orange does have the Essex Green Shopping Plaza, but that is an open air establishment.

Eascare Ambulance, seen at the end, is a company in Boston who mainly do inter-facility transfer. They are not in New Jersey.

When Paul Blart takes the toy robot, he does not take the remote for it; however, he is able to use it later on.

After Paul Blart knocks out one of the thugs, he puts him in a tanning bed, ties it closed and leaves him. There is one problem he leaves the tanning bed on, and even limited exposure would have caused severe burns, and it's careless the Paul did this, he should have known better.

When Paul Blart is talking to Amy she asks him if he was the guy that crashed into the minivan and points to a blue minivan, but he actually hits a silver one.

When Paul takes Amy out to her car, he says "1965 Mustang", and she says he's right. The car is actually a 1966 Mustang. The 3-prong chrome trim on the side was only available on the 1966 model.

During the mall's introduction scene, a man asks Paul for directions to the nearest men's restroom, and Paul replies, "You're gonna want to go to Lord & Taylor," but he actually points to Sears.