Jeffrey Dean Morgan was cast as Henry Herschel but left due to scheduling conflicts. He was replaced by Jason Sudeikis.
Chloë Grace Moretz was cast as Millie but left due to scheduling conflicts. She receives a thank you in the end credits.
Penny Herschel's (Jessica Biel) date of birth mentioned on the Obituary form is exactly the same as her birth-date in real life
Richard Robichaux (Pascal) speaks a mix of English, Cajun, and French language.