Jon Heder, who plays Napoleon, was paid just $1000 for his role in the film.
Jon Heder drew every, eh, ‘stylistic’ drawing in the film other than the unicorn.
From 2004-08, Preston, Idaho, the town where the film was shot, held a festival every year celebrating the film. Activities included tater-tot eating, football throwing, and other contests based upon scenes in the film.
Has the longest cast list in film history; all 181 student extras’ names are listed individually.
The scene where the farmer shoots the cow in front of a school bus full of children is based upon an actual event from director and co-writer Jared Hess’s youth.
The entire film was shot in just 22 days.
The famous dance scene is actually a combination of Jon Heder dancing to three different songs. Director Jared Hess then took the ‘best moves’ and edited them together, using one song.
Both Jon Heder (Napoleon) and Efren Ramirez (Pedro) have identical twins in real life.
The llama, known as ‘Tina’ in the film, actually belongs to director Jared Hess’ mother and is called Dolly.
Every meal presented in the credits at the start of the film is eaten by a character later in the film.
Uncle Rico’s girlfriend – who arrives at the end of the film on a bike- is actually the wife of Aaron Ruell, who plays Kip Dynamite in the film.
Despite playing high school students, Jon Heder was 26 and Efren Ramirez 31 at the time of filming.
When in the cafeteria, Deb is always eating a PB&J sandwich. In real life, actress Tina Majorino has a life-threatening allergy to peanuts.
After the film’s surprise success on the fest5ival circuit, FOX Searchlight added a 5-minute epilogue after the credits, featuring a wedding scene. This addition cost more than half of the films original budget.
In the wedding scene, LaFawnduh’s appalled family are actress Shondrella Avery’s family in real life! Director Jared Hess phoned up Avery and, due to a lack of black people in Preston, Idaho, asked her if her family wanted to be in the film.
A short-lived 2012 animated series reunited the cast to voice their original characters. It was canceled after just six episodes.