Trivia: The Exorcism of Emily Rose
- This is one of three films based on the story of Anneliese Michel. The other two were Requiem in 2006, which had much less of a mystical aspect to the story, and Anneliese: The Exorcist Tapes, a Direct-to-Video release in 2011.
- The Cast Show Off: The filmmakers saved a lot of money on special effects when Jennifer Carpenter pointed out she could do all those weird poses herself.
- What Could Have Been: The movie was originally supposed to be a period piece, but the budget constraints convinced the director to have the story take place in modern times.