The church shown during the wedding rehearsal is in Boulder, Colorado, 20 miles northwest of Denver. The church can be seen on the right from Hwy. 36 just as you enter town.
A scene that echoes Jack Nicholson's famous diner scene in Five Easy Pieces (his exchange with the waitress) was in an early cut of the movie in which Schmidt concedes in a cowardly fashion to the dictates of the waitress. Though the preview audience went wild over it, director Alexander Payne cut it from the final film because he felt that the scene was too much of a pointed reference to Nicholson's iconography and that something so referential took the audience out of the film.
The movie theater that Warren drives by before he goes to the museum to look at the arrowheads is the Pioneer 3 in Nebraska City, Nebraska. The "museum" is a Civil War museum in the same town, just down the street.
The Woodmen of the World Life Insurance Society is an actual organization. Jack Nicholson filmed his scenes at the company's offices and was given a plaque making him an honorary Woodmen member.
The film's plot involves the children's charity "Childreach". Since 2002, the year of the film's release, the organization has referenced the film and featured its poster in its literature for prospective child sponsors.
Once the filmmakers bought the rights to the Louis Begley novel, they kept the title and the main character but changed just about everything else. In the book, the main character lived in the Hamptons and his daughter was about to marry a lawyer.
Other actors were also in the movie but cut before release. These were (with their character names): Tim Driscoll (Grocery Store Manager) and Jeff Morris (Farmer at Gas Station).
When Jack Nicholson received the Golden Globe for Best Actor in a Drama, he commented afterward, "I'm a little surprised. I thought we had made a comedy."
Len Cariou plays Ray and Angela Lansbury narrates the Childreach commercial. They played Sweeney Todd and Mrs. Lovett respectively in the original Broadway version of the musical "Sweeney Todd: The Demon Barber of Fleet Street."
When Jack Nicholson met Alexander Payne to discuss his role, Payne had a one-sentence directive for him; it was "Jack, I want you to play a small man."