Goofs

At Debi's house, Martin's baseball cap is taken off and put on one of her bed posts. After they do the "airplane" and he is leaving, it's in his back pocket even though no one took it down.

In the beginning Grocer comes out of the hotel and shoots everyone. He has two revolvers which contain six shots each, but he fires more than 20 shots without reloading.

In the Ultimart, the clerk is playing Doom 2. The level he is playing switches from Level 30 to Level 1, then Level 8 and back to Level 30, all in a few seconds.

Despite never turning around nor leaving the main street of Grosse Pointe, Martin passes the same stores twice.

When Robbie's Mother starts to hand him to Martin, the baby's back is toward Martin. As the camera cuts to a closer focus on Martin, the baby is now facing him.

Debi's radio station is FM 79.5. In the US, the FM band is 87.9 to 107.9. This was done to avoid identification with any actual radio stations in the area.

When DJ-ing, Debi plays a Specials LP with the 2 Tone label on it. The song she played, Pressure Drop (originally done by Toots & The Maytals), never appeared on any Specials LPs on the 2 Tone label; it was on an album released in 1996 called "Today's Specials" on Kuff Records.

In the kitchen at Debi's house, Blank and Grocer both empty their pistols and the slides lock back. Then they both pull the triggers, and all 4 guns "click". Neither the Glock 17s nor the Colt Mustangs can click when the slides are locked back.

During the reunion party, Martin takes a photo of Debi holding the baby. He is using a Minox "spy" camera which has no flash, but there is a flash when the photo is taken, as well as the sound of a motor drive that the camera doesn't have either.

When Martin is in his hotel room after the reunion, he hears someone knocking on the door. Since he does not know who it is, he grabs a handgun, and there is the sound of a handgun hammer cocking. The gun he has is a Glock, which has no hammer to cock.

Martin shuts the Venetian blinds at the radio station, but there is an open set when he sits back down.

Those blinds are on a different window.

After Debi announces on her radio show that she's playing an all-'80s weekend in honor of the reunion, the next song she plays is "Rudie Can't Fail" by The Clash, which was released in mid-December 1979 in the UK.

However, it was not released in the US until January 1980. Also, a popular song released in late December would have received significant air play the following year and would be considered part of that year.

Martin and Paul run into Jenny Slater, and Paul desperately tries to get her attention. When she remembers who he is, she turns away seemingly in disgust, as if she wants nothing to do with him. About 6 minutes later, Paul can be seen standing behind Martin and Debi, confidently grabbing Jenny by the arm and beginning dancing with her.

It's not impossible for Jenny to have realized how rude she was to Paul, apologized, and agreed to dance with him.

When Martin first stops in front of the convenience store, the shadow from his car shows it is about noon, and it is an asphalt street. In the next shot, the front of the store, the shadows indicate a much later time, and the street is full of mud and gravel.

When the bomb is rotating in the microwave, there are no sparks as would be present if metal wire were in a microwave when it is turned on.

The arcade game that the Ultimart employee is playing during the shootout is the aptly titled classic Doom II. The game was never actually available in a commercial arcade cabinet and must have been constructed specially for the film.

The position of the shadows change irregularly against the outside of the High School when Martin is talking to his old teacher.

When Martin closes his locker, Felix appears from somewhere down the hall. As the camera angle changes during the fight, it can be seen that Felix came from the alcove for a classroom door where Martin would have seen or heard him long before his appearance in the hall. The stairwell from which Felix should have come (from which Paul appears later) is significantly farther away from the locker - but that would have prevented the lightning-fast start of the fight.

Throughout the movie, gunfire and muzzle flashes don't always match.

In the beginning, just before Martin sees Debi for the first time, sitting in her radio booth, he is driving in his car and looking to his right. He is wearing a black cap and sunglasses. The camera mounted in the open window of the car, is visible in their reflection multiple times.

During the introducing shots of Grosse Pointe, there is a shot of a boat, and helicopter blades are visible at the very top of the screen.

When Martin first arrives at the Ultimart, a crew member with a boom microphone is reflected in the side of Martin's car.

When Martin and Grosser are discussing the 'Assassins Union' concept, the set lights are reflected in Martin's sunglasses after they discuss the hotel maid assassins.

When Martin is in the car with Mr. Newberry, palm trees are visible in the background. There are no palm trees in Detroit.

In the street just before Martin sees Paul for the first time, there are mountains in the distance -- something definitely not found in Grosse Pointe.

When Martin calls Dr. Oatman the last time, he dials only seven numbers, yet he has flown to Detroit from elsewhere; he should have included a '1' and an area code.