Walter Matthau's final role. In very poor health throughout filming, he suffered from several cardiovascular problems, and had more than two heart attacks since his first in 1965. He died over seven months later, four months after the film's release.

Walter Matthau was hospitalized with pneumonia for two months when filming ended in May 1999.

This is the second movie Meg Ryan and Walter Matthau starred in together. The first was I.Q. (1994).

The house is the same one from The Fast and the Furious (2001).

Lisa Kudrow is a huge fan of Diane Keaton in real life.