Paul Newman turned down the role of Bernie White.

Co-screenwriter Stephen Koepp has experience in the world of journalism, as he is the editor-in-chief of TIME Magazine.

Mike Sheehan was the perfect choice to play the character of New York Detective Ritchie, a police source for Michael McDougal. Sheehan was the key detective in the Central Park Case of 1989 in which five African-American and Latino-American teens from Harlem were wrongfully accused of attempted murder and rape of a twenty-eight-year-old white woman jogging in Central Park. Despite the overturn of the Central Park Five's conviction in 2002, Sheehan remains confident that the teens committed the crime. In the film, Sheehan's character Ritchie, when pressed by MacDougal and Keaton's character Henry Hackett about whether the two teenage African-American boys are NYPD scapegoats for the killing of white businessmen in Brooklyn, gives the quote and headline for the newspaper: "They didn't do it!"

The radio broadcast heard during the opening credits of the film was originally intended to be a segment from Don Imus' "Imus in the Morning" program that was recorded live during an on-air interview with director Ron Howard. A portion of the segment appears as Michael Keaton walks through the newsroom.

There are some dozen daily newspapers published in New York City, but the circulations of all newspapers - and the numbers of papers - have declined substantially since the dawn of the digital age of technology. The average daily circulation of the largest paper in 2020 - The Wall Street Journal, was 994,600. After it comes USA Today, with 486,579 average daily circulation in 2020. The New York Times comes in third at 410,562. Those are all New York published. After that the numbers drop significantly across the country and in New York. The Washington Post is the only other paper above 200,000 - at 206,824. The Lost Angeles Times is fifth at 193,015; then comes the New York Post at 162,478. The last New York paper in the top 10 is Newsday in 9th spot at 123,905.

All five top billed cast members have been nominated for one or more Academy Award: Michael Keaton (one nomination) Robert Duvall (one win, seven nominations), Glenn Close (six nominations), Marisa Tomei (one win, two nominations), and Randy Quaid (one nomination). Additionally, Jason Robards has won two Oscars and nominated once more, and writer Richard Price, who appears as himself in the movie, received one Oscar nomination.

This film takes place in a twenty-four hour span. The events of the film follows different characters and their experiences throughout their entire day. The film was produced by Brian Grazer, who also produced the hit television show, 24 (2001), which also similarly follows different characters over a twenty-four hour span.

When Alicia walks into the men's room, sportscaster Bob Costas makes a cameo appearance as the guy at the urinal.

The New York Sentinel is sort of an in-joke by screenwriters David Koepp and Stephen Koepp. It's loosely based on the real New York Times newspaper for one, and the other is the horror film, The Sentinel (1977), which was also shot in New York City.

This is the third and so far, final film, on which Michael Keaton and Ron Howard have worked together. They made Night Shift (1982) (Keaton's first theatrical role), Gung Ho (1986) and this film together. Keaton also starred in Clean and Sober (1988), of which Howard was one of the producers.

Alec Baldwin, Kevin Costner, Mel Gibson, Tom Hanks, Bill Paxton, Kurt Russell, John Travolta and Robin Williams were considered to play Henry Hackett.

When Michael Keaton is hanging up the phone, the camera pans down and on the back of the Come there is a Batman Logo, it's an ad For Great Adventure in NJ, Michael Keaton appeared in Batman(1989) and Batman Returns (1992)

The New York Daily News was the first tabloid newspaper in the U.S. It was founded in 1919, and for decades was the largest circulation paper in the U.S. Its peak circulation was 2.4 million in 1947. In 2020, it was the 11th largest U.S. paper, with just over 100,000 average daily circulation.

Film debut of Jim Meskimen.

In the opening scene in the kitchen when Henry is drinking his Coke after looking at the papers you can see the Batman logo on the Coke can. Michael Keaton played Batman in 1989.

Referring to the supposed inexperience of photojournalist Robin, Alicia says, "Robin is only fourteen." In reality, Amelia Campbell the actress who portrayed Robin was 29 years old at the time of the filming.

The "New York Sun" is located in lower downtown Manhattan about a block from City Hall.

Final film of William Prince (Howard Hackett).

While a couple of actual daily newspapers got early starts in tabloid format, it was in the late 20th century that many regular daily newspapers began converting to the tabloid size. They were easier for readers to handle and more convenient to produce. If a page had to be remade, it was much less work and must faster. This film is about a daily newspaper that is published in tabloid format.

Jason Alexander & Marisa Tomei also appeared together in the Seinfeld (1989) episode 7.14, Seinfeld: The Cadillac (1996).

This is the second movie featuring Randy Quaid and Robert Duvall, the other movie are: Days Of Thunder (1990)

Well past the mid-20th century, the term "tabloid press" usually referred to the weekly tabloids that are sold on the counters of grocery, convenience and drug stores. The content of these paper is sensationalist "reporting." They write about celebrities, in the entertainment fields, politicians and other high-profile people. Adulterous affairs, divorces, family feuds, crime, corruption and other scandals fill them. Within the journalism profession, these papers are referred to as "scandal sheets." Closely associated with the tabloid press are the paparazzi - photographers out to get any pictures of any celebs doing just about anything.

Michael Keaton and Marisa Tomei appeared in Spider-Man: Homecoming (2017).

The only thing hyperactive Henry drinks in the entire movie is Coca-Cola.

Jill Hennessy originally had more to do, but was cut for pacing issues, as well the fact that she was filming episodes for her debut season on Law & Order (1990), which was also filmed in New York City.

The real New York Sentinel ran from 1830 to 1833. It was one of the very first daily papers in America. Its founder went on to start The Sun, which ran from 1833 to 1950 in New York.

After the scene where Henry and Alicia have their fight in the printing room, he tells her "Congratulations, you've officially become everything you used to hate." This is quite similar to the character on the series, Damages (2007), in which Glenn Close's character tries to manipulate and turn Rose Byrne's character on the show to be as ruthless and calculating. However, for this film, it means that Keaton and Close were very close friends and reporters, before she became who she is in the film, and universally hated by her colleagues.

This film has several similarities to Andrew Klavan's novel "True Crime": A crusading reporter; innocent men who are framed for murder; a midnight deadline; families in distress; tough but fair editors-in-chief; a rival reporter or bureaucrat. Also, the newspapers represented are not major ones like the New York Times or the San Francisco Chronicle.

Michael Keaton and Catherine O'Hara previously appeared in Beetlejuice (1988).

Martha's nickname is "Marty," which is uttered by Henry a few times.

Jason Robards, who plays the owner of The New York Sun, the fictitious newspaper depicted in the film, won an Oscar for his portrayal of Ben Bradlee (who was the executive editor for The Washington Post) in All the President's Men (1976).

Glenn Close played a similar character to Alicia Clark's ruthless bean counting co-editor-in-chief in the hit FX series Damages (2007), where she played a ruthless and manipulative lawyer, winning several Emmys during the show's run.

Michael Keaton and Robert Duvall starred in A Shot at Glory (2000).

The second film where Ron Howard collaborated with Randy Newman. Their first film was Parenthood (1989), where Newman received an Oscar nomination for the song, "I Love To See You Smile."

Robert Duvall and William Prince appeared in Network (1976).

Rance Howard and Ron Howard both appeared on The Waltons (1972) and The Andy Griffith Show (1960).

Alicia says to Henry that Robin the photographer is only fourteen years old. Amelia Campbell who played Robin was actually twenty-nine at the time of the filming.

At the beginning of the film, Henry wakes up around 7 a.m. after coming home from work two hours earlier, which is ranted about loudly by Martha to end the scene, and at the end of the movie, Henry walks into Martha's room after she gives birth to their baby in the hospital, around the same time he woke up the previous morning, with no energy, and wearing a similar shirt and tie into bed. This means that all of the events that happened in the film, took place in roughly twenty-four hours.

The two murdered businessmen in the film are from Sedona, Arizona, which is the information that Henry stole off Paul Bladden's desk during his job interview, and becomes so irate about, later on in the film.

The two murdered businessmen had laundered $8 million for the mob, which is why Martha's reaction to the list of numbers given to her by her friend was shocking.

A foreshadowing of the fight between Sandusky and McDougall, is when McDougall's car is left double parked in front of the New York Sun building, and then towed away. This would lead to Alicia taking McDougall for a drink at the bar, where he's a regular, along with other newspaper reporters from around the city, and Sandusky happens to be in the moment he shows up, and eventually leading to Alicia getting shot in her calf later on.