OnlyANinja good point - I once saw an interview about a Diane Keaton film (I think it was Something's gotta give). To design the sets they actually hired an interior designer who was given a brief about the kind of woman who lived in the house (a beautiful house in the Hamptons) so they imagined what she was like, her history etc so that her home reflected her character.
I am sure there is so much detail we miss out on when watching films (a friend of mine is fascinated about what people are eating on film, deconstructing boxed sets).
Great blog Givemushypeasachance! Not sure what Arthur Conan Doyle would make of the "tell me what brand Moriarty's phone is" posts 