Continuity mistake: When John smashes a window to break into their house, the size and shape of the hole in the glass changes between shots.
Continuity mistake: In the scene where Jane and John are driving the stolen minivan and fighting the BMW's on the bridge, the sliding side door and hatch alternate between shots of being opened and closed. Jane's hair flies around from the door being open, before it is ever opened for the first time. These changes occur between wide and close-up shots, and between Jane's and John's close-ups, throughout the entire scene.
Continuity mistake: One of the times that Angelina Jolie uses her binoculars to watch the approaching convoy of humvees in the desert, she increases the magnification. At the same time, the view changes from showing the vehicles head-on to showing them more from the side.
Revealing mistake: While John drives the minivan, there's a closeup of the rearview mirror's reflection as he spots the first BMW tailing them, but the problem is the view we see within the mirror is not backwards, even though it should be.
Character mistake: When the Smiths first enter the store Home Made, the camera pans around and faces the store's large display picture which reads, "The true measure of a home lies in it's kitchen," but the word "it's" should be "its."
Revealing mistake: While Jane drives the minivan, after John tells her that he knew he saw her "father" on Fantasy Island, there's a closeup of the rearview mirror's reflection just as Jane sees the two BMWs still chasing them, but the view we see within the mirror's reflection is not backwards.
Continuity mistake: While John's standing at the minivan's open rear door hitting the guy with the golf club, we can see that the van's rear-view mirror has been removed for this shot, but it's back in its place in following shots.
Continuity mistake: While the Smiths are hiding out in the small shed in Home Made, at one point Jane's glasses are folded and hanging from her neckline with the nose guards facing her right, but in the next shot the glasses are facing her left, then it's back to her right, and finally her left again.
Continuity mistake: When John comes home to the lovely pot roast dinner he places his martini glass on the table, and when Jane takes the skewered olives in the closeup there are three, but in the wideshot there are only two olives on the pick as Jane puts it in her mouth.
Continuity mistake: When Jane opens the minivan's hatch the driver's side window is already shattered, before it actually happens.
Continuity mistake: After John hits the guy with the golf club he pulls the grenade pin, and when John dives back into the minivan he knocks down the rod holding the dry cleaning hangers, but then the rod is back up again without the hangers, and when the last two BMWs are taken out, the dry cleaning hangers are back up as well.
Factual error: In the scene when Angelina Jolie and Brad Pitt are being chased by their headquarters on the freeway, Brad Pitt opens the trunk of the van they are driving in. In the type of van they were driving you can only open the trunk if it's in park and it wasn't their van, it belonged to their neighbours, so it wouldn't have any special treatment.
Continuity mistake: After John fakes his death in the falling elevator, in the wideshots he reaches up with his left hand to disconnect his video feed, but in the closeup it's his right hand disconnecting it.
Factual error: When they race home Jane T-bones John and caves in the side of his car, but her car shows no damage. A modern Mercedes (2005) is designed to crumple in such an impact.
Other mistake: In the scene where Jane and John race home, we see Jane smashing her Mercedes C320 wagon into John's Lincoln town car. Both these vehicles have airbags, yet they do not deploy upon the impact between the two cars. (01:07:25)
Continuity mistake: When Brad and Angelina are in the basement right before it blows up, Brad is holding a 6 shooter and when he is running out of the basement the second he runs outside and starts shooting he is holding a different gun. (01:21:25 - 01:22:00)
Continuity mistake: During the car chase scene, the minivan driven by Brad sometimes has its left tail light and sometimes does not. This mistake is visible several times during the scene.
Continuity mistake: In the store, John takes out two mercenaries with a pipe wrench. They had suppressed MP5s. When Jane and John take the weapons, the suppressors have gone. (01:44:17)
Other mistake: In the hunt out in the wilderness - where Jane looks in the binoculars - there is a cover on one lens - but it shows you can see both sides. (00:30:27)
Answer: She notices that he shakes his right leg twice after peeing, just like her husband.