Before deciding on the title, "When Harry Met Sally...," screenwriter Nora Ephron, producer Andrew Scheinman, and director Rob Reiner considered: "Just Friends," "Playing Melancholy Baby," "Boy Meets Girl," "Blue Moon," "Words of Love," "It Had To Be You," "Harry, This Is Sally," and "How They Met."
Screenwriter Nora Ephron was unhappy with its title. It was the one thing she would go back and fix if she could.
Albert Brooks turned down the role of Harry Burns.
Director Rob Reiner originally wanted Susan Dey to play Sally Albright. When Dey turned down the part, he approached Elizabeth Perkins, Elizabeth McGovern and Molly Ringwald. At this point, Meg Ryan started lobbying hard for the part.
The off-camera voice that says, "Hey, everybody, ten seconds until new year," is Rob Reiner.
The scene where all four lead characters talking to each other individually on various telephones took sixty takes.
Molly Ringwald was offered the role of Sally Albright, but was forced to decline due to a busy schedule. She would later go on to play the character in 2004 in the stage version of the film, on London's West End.
Harry is shown reading Stephen King's "Misery." The film adaptation would be the next movie directed by Rob Reiner.