Continuity: Close to the end when Edward Norton runs up to the front of the empty building and Brad Pitt appears, he tries to break the glass door by pushing a bench into the door, but it doesn't work.  He doesn't move the bench and he then shoots at the glass and breaks it.  When it shows him walking through the broken door, the bench has disappeared.

Revealing: When Brad Pitt throws Edward Norton down the stairs, there's a shot close to the bottom of the stairs in which you can see the stunt-man's face.

Revealing: When members of Fight Club are starting fights, watch VERY closely when the guy with the hose sprays the vicar - you can see the camera wobble slightly (looking on the left of the screen at the top of the fence is a good reference point). This happened because the cameraman started to laugh.

Continuity: When Ed Norton is beating the crap out of beautiful Angelface, he makes him bleed a lot, and his whole face is covered in blood. But when Ed Norton walks away, he nudges another guy out of the way, and you can see his hand in the bit of light. If you look closely at his hand, there is no blood anywhere.

Continuity: Check out the sweat stain around the collar of Ed Norton's t-shirt in the scene towards the end of the film where he is being interrogated by police. It keeps getting bigger and smaller from shot to shot.

Continuity: When the Narrator and Bob are crying together at the support group, Bob is much taller than the Narrator. However, when the two meet in front of Marla's place and Bob tells the Narrator that he is a member of Fight Club, the Narrator is taller than Bob. Edward Norton mentions this on the commentary. He is actually taller than Meat Loaf, but Bob is supposed to be taller than the Narrator. It seems they didn't remember to make him taller in every scene though.

Revealing: Towards the end of the film, when the narrator and Tyler are fighting in the basement, Tyler slams the narrator's head into the wall by the van. For a split second, before the shot changes, the 'concrete' wall visibly buckles inwards.

Continuity: In the scene towards the end where The Narrator is trying to break into the building, he smashes the bench into the door and fails to break the glass. He then shoots the glass with the pistol and it jams. The camera cuts to the next shot and the pistol is no longer jammed.

Continuity: At the end of the movie when Jack shoots himself in the mouth, the bullet exits behind his jawbone. This signifies that the bullet exited his mouth and kept traveling. But none of the window panes behind him are cracked or shattered from the bullet.

Visible crew/equipment: In the sequence where The Narrator is explaining about Tyler's projectionist job, a boom mike is visible at the upper left hand side of the screen, before Tyler explains about the cigarette burns.

Continuity: Near the end of the movie in the underground car park, Brad Pitt pushes Edward Norton into the wingmirror of a van. The mirror flips back against the van and stays there. A couple of shots later we see Brad Pitt check his face in the mirror, which is at a different angle to what it was before.

Revealing: Towards the beginning when Edward Norton is ordering out of the catalog, he is walking into his kitchen. Look at his shadow to his left, it doesn't change distances indicating a blue or green screen.

Continuity: When Ed Norton's character is on the toilet ordering stuff from Furni, he tosses the magazine down with the cover facing up. If you pay close attention while he's holding it, you can clearly see the title printed in big letters. However, when it lands on the table, the cover is different - it's managed to flip itself over in midair and has landed face down.

Continuity: In the scene when Ed Norton is blackmailing his boss the thermostat changes from white to black in some of the shots. The chair moves a bit to the left too.

Continuity: In the scene in the bar right after Edward Norton's apartment blows up, watch the men playing pool behind him. Towards the end of his conversation with Pitt, there is a continuity error. One of the men is bent over getting ready to take a shot. A mere second later, he's on the other side of the table and his opponent is finishing his own shot.

Continuity: In the scene where Tyler gets beaten up by Lou, his mouth is bleeding after the first punch. After maybe two punches Tyler jokingly claims to "get it", then he says he "lost it". Right then the blood is no longer there.

Factual error: In the scene where Marla Singer is talking on the phone with Jack, as she is saying "I've got a stomach full of Xanax... I took what was left of a bottle... might've been too much." The camera zooms in on the bottle, lying on its side. You can read the label: "Xanax - 300mg". Xanax only comes in 4 dosages - .25mg, .5mg, 1mg and 2mg. Obviously 300mg in a single pill would be a pretty fatal dosage, even if she only took one such pill.

Revealing: Just after the car crash scene when they are all crawling out of the car, a large drop of rain is seen in the very top left of the picture. The drop is too large and falls too slowly to be an actual drop of rain. This shows there is an umbrella type thing protecting the camera from the water.

Continuity: At the very end of the movie, around the time Ed Norton is putting the gun to his face, Brad Pitt throws his cigarette down twice.

Continuity: When they are preparing to confront the City Councilman, Brad Pitt's character pulls him in to the bathroom. If you really look at the locks on the door you see that as he is pulling him in there is no deadbolt lock, but when the Councilman is halfway in through the mirror you can see that the same door has a deadbolt lock.