Trivia: Panic Room
- The Other Marty: Originally Nicole Kidman was cast in the lead role and shot a few scenes. She injured her knee while filming Moulin Rouge! and was replaced by Jodie Foster. She did end up in the film as the voice of Foster's ex-husband's mistress when she calls him for help.
- Separated-at-Birth Casting: 12 year old Kristen Stewart looked like Jodie Foster when she was that age and plays her daughter.
- What Could Have Been: Just as Nicole Kidman was originally Meg, Hayden Panettiere was originally due to play Sarah. Unlike with The Other Marty above, she was replaced by Kristen Stewart without actually filming any scenes.