There is more than one instance where you see a poster for two missing young boys. Those boys were actually pictures of Rob Zombie and his brother (the lead singer of Powerman 5000) as children.
In 2014, Rob Zombie acknowledged the movie's cult following but admitted that he himself is not fond of it. Zombie called the film "a calamitous mess [...] All I see is flaw, upon flaw, upon flaw...upon flaw".
Most of the cutaway scenes (Otis torturing cheerleaders, Baby masturbating with the skeleton, etc.) were filmed in Rob Zombie's basement after filming wrapped. He would invite cast members over to his house on the weekends and shoot the footage himself with a 16mm hand-held camera. With the exception of the shot of a setting sun, he created the opening credits the same way.
Filmed in 2000, not released until 2003.
Tobe Hooper was a fan of this film upon its release. As a result, he offered Sheri Moon Zombie a supporting role in his then upcoming film Toolbox Murders (2004), having loved her character. She initially turned down the role, as she did not have a desire to be a full-time actress and only appeared in this film because director Rob Zombie was her boyfriend. She eventually relented as a personal favor because Hooper and Zombie were friends. She has not appeared in a film not directed by her husband since, she only had a very short role appearance in the series Californication (2007).