In one scene in the "Barn Burner" episode (Season One), it appears that Catalina is telling off Joy in Spanish. What she actually says is, "I want to thank the Latino audience that tunes in to watch the show every week. And to those of you who aren't Latino, I want to congratulate you for learning another language."

While watching Season Two, keep an eye out for a message on a blackboard that references the "Save the Cheerleader, Save the World' message from Heroes. But be warned: this new message is a bit rude.

Jason Lee was not interested in working in television and passed on Earl twice before finally agreeing to read the pilot script. Though he liked the script, he was hesitant to commit until after meeting with Greg Garcia, the creator.

Apparently the character of Earl is partly based on Greg Garcia's step-father, also named Earl. The real-life Earl met and married a woman while she was pregnant with another man's child and who eventually had a second child with an African-American man, just as Joy did. The real-life Earl has also been involved in some questionable activities in the past but reformed, as has Earl.

The show takes place in the fictional town of Camden County and is not based on any of the four real-life Camden Counties in America. Camden is the creator's son's name.

Jason Lee and Ethan Suplee are scientologists.

The pilot episode features the song "Do The Monkey" by The Wiggles.

Jason Lee and Ethan Suplee also co-starred in several films directed by Kevin Smith: Mallrats, Chasing Amy, Dogma and Clerks II.

Whenever Earl wakes up Randy, the first thing that Randy says is "poopie trim." This is a reference to the movie Mallrats, in which Ethan Suplee's character, Willam Black, says "poopie trim" every time's he's prevented from seeing a Magic Eye.

In 2006, My Name is Earl won 4 Emmy awards: Outstanding Casting for a Comedy Series, Outstanding Directing for a Comedy Series, Outstanding Single-Camera Picture Editing for a Comedy Series and Outstanding Writing for a Comedy Series. Go team!