Did You Know?

A great amount of the dialogue is improvised.

In the first season, they filmed in an empty house for the Davids' home. When someone actually moved into the house, the production (and the fictional Davids) were forced into finding a different house.

At the start of the first season, Jeff Garlin (Jeff Greene) was still recovering from the effects of a stroke. The actor contends that the demands of filming a weekly TV series was instrumental in his full recovery.

The theme music, "Frolic" by Luciano Michelini, was originally used on a bank commercial which stuck in Larry David's head.

Most of the main characters have the same first names as the actors who play them: Jeff Garlin as Jeff Greene, Cheryl Hines as Cheryl David, and Susie Essman as Susie Greene.

In 2003 a man named Juan Catalan was arrested for a murder in Los Angeles. He repeatedly professed his innocence and asked to take a lie detector test, a request that the police denied. He also had an alibi: he swore that at the time of the murder he was at Dodger Stadium with his little girl, watching the Dodgers vs. the Braves, but his lawyer was unable to find him in any of the Dodger Vision or FOX footage he subpoenaed. However, he discovered that there was another source of crowd footage in the episode Curb Your Enthusiasm: The Car Pool Lane, which had filmed at Dodger Stadium that night. Although Catalan did not make the final cut of the show, his lawyer was able to find him and his daughter in the outtakes, and determined from the timestamps on the tapes that Catalan could not have been the killer. When told that his show had released a wrongfully accused man from prison and a trial that could have led to the death penalty, Larry David commented, "I tell people that I've now done one decent thing in my life, albeit inadvertently."

Despite his on screen reputation as a misanthrope, the real Larry David will not joke about an actor's appearance unless he gets permission from them. For example, Jeff Garland has given him permission to call the character Jeff Green "fat" and in "The Pants Tent" Larry was concerned that when his character accused a woman of having breast implants that people would assume that the actress had breast implants.