Keanu Reeves accepted a lower salary so the producers could pay Al Pacino's asking price. When Pacino later heard about this, he donated the same amount of his salary to charity.
The boxing match that Lomax and Milton attend was not a staged bout, but in fact a legitimate world championship boxing match. The bout occurred on October 4, 1996, at Madison Square Garden in New York City. Roy Jones Jr., IBF super-middleweight champion, squared off against top contender Bryant Brannon. Jones knocked out Brannon during the second round of the bout. Jones later appeared in another Keanu Reeves movie, Matrix recargado (2003).
The outdoor patio in John Milton's office was actually on the 50th floor of a New York City building. The actual stage was eight feet away from the edge of the building.
When Eddie Barzoon is running in the park, the three joggers chasing him are each wearing a color associated with the Four Horsemen of the Apocalypse, more specifically, the color of their horses. One is in white, representing the horse of Conquest (or Pestilence). One is in red, representing the horse of War. The final jogger is wearing black, representing the horse of Famine. Milton, who is reciting a monologue about Barzoon to provide his justification for sending the demon joggers after Barzoon, is wearing a green robe. Green was the color of the final horse belonging to Death.
Charlize Theron thought long and hard about appearing fully nude in the film, having turned down Showgirls. Lo prohibido (1995) for precisely that reason. She finally agreed because she loved her character.
Arnold Kopelson: Producer appears in the last shot of the party scene. Pam Garrety is having a conversation with him, as Mary Ann Lomax asks her "Have you seen Kevin?"