15 details and mistakes you probably missed in 'Fight Club'

After the anti-piracy warning on the "Fight Club" DVD, there's an additional fake alert from Tyler.

Toward the end, it reads, "Quit your job. Start a fight. Prove you're alive," which is the same advice he gives the members of Project Mayhem in the film.

Marla appears to use her real name at every meeting she attends, but The Narrator always has a fake identity on his name tags.

He writes Cornelius for the testicular-cancer group, Travis for the tuberculosis one, Lenny for the sickle-cell meetings, and Rupert for the general cancer group. 

Before Tyler is introduced, he briefly appears whenever The Narrator is describing his insomnia.

Tyler first appears on-screen in a single frame when the doctor tells The Narrator about support groups, then again during the first meeting. A slightly longer image of Tyler is shown in a commercial when The Narrator talks about waking up in a different place.

Moments before the two finally meet on a plane, Tyler is also seen along the walkway in the airport.

When The Narrator first views the support-group meeting schedule, there are several listed for the same time, such as Tuesday's Glorious Day and Taking Flight.

This may have been a prop error, as Marla and The Narrator never mention this when they agree to split the schedule.

Marla wrote the phone number 555-0134 on a piece of paper for The Narrator. This same phone number appears on a Polaroid picture in "Memento" (2000).

The phone number can be seen in other movies as well, such as "Harriet the Spy" (1996).

When talking about decorating his apartment, The Narrator mentions his "clever" coffee table that's in the shape of the yin-yang symbol.

That same coffee table is later shown as the only recognizable piece that survived the explosion in his condo. Some of the legs are broken and there are a few singe marks, but it's largely intact. 

Tyler's business card for Paper Street Soap Co. shows the business' address as 537 Paper Street, which is the house that he and the rest of Project Mayhem end up living in.

A paper street often refers to a road that doesn't actually exist but is on a map to help plan future roadways. By referring to something nonexistent, the address may also hint at the fact that Tyler isn't real. 

Norton told Jimmy Fallon in 2019 that director David Fincher told him to actually throw a punch, which landed on Pitt's ear.

Pitt's genuine exclamation, "You hit me in the ear," made it into the final cut of the movie.

Lou — the owner of the bar where Tyler sets up the first Fight Club — beats Tyler for using the basement space behind his back.

Tyler's face is bloody after the second punch, but the blood completely disappears during a close-up scene. It reappears after the third blow.

The Narrator appears wounded whenever Tyler is, which is another hint that they're the same person. 

When Tyler's getting beat up by Lou, The Narrator seems to jerk his head or body as if he's the one being injured. 

Starbucks cups are seen throughout the movie. Per Screen Rant, Fincher even told Empire magazine that a Starbucks cup was visible in almost every scene of the film. 

But when the Project Mayhem members destroy a coffee shop later in the film, they target a Gratifico Coffee, not a Starbucks.

Bob gets shot and killed by police during his Project Mayhem assignment.

When his body is carried into the kitchen, his eyes are open, but when the camera pans over his face again a few seconds later, his eyes are closed.

The Narrator never reveals his name throughout most of the movie. This sets up the plot twist that he and Tyler are the same person, as Marla later reveals that he introduced himself to her as Tyler Durden.

There are also moments in the movie where characters don't acknowledge Tyler's presence, such as when a man pushes past them on the bus but only apologizes to The Narrator.

Tyler purposefully crashes a car with The Narrator in the passenger's seat and two Project Mayhem members in the back.

Although Tyler's driving, The Narrator gets dragged out of the driver's side after the crash, seemingly implying that The Narrator was the one driving the car all along.

The Narrator thinks that Marla's able to take a bus to safety until Tyler reveals that he had the Project Mayhem members kidnap her.

Multiple men appear to stand up and begin surrounding Marla when she boards the bus, showing that Tyler had apparently already planned her abduction.