I was at dinner tonight with friends, and at one point the conversation turned to movies (and books) making use of real-world locations, and doing it badly. I complained about what I can only assume was the digital pasting-in of the Dallas skyline over a shot of West Texas in the X-Files movie (since that didn't look like any spot outside of Dallas I've ever seen), and one of my friends went on a several-minute tear about Little Miss Sunshine and its egregious errors of geography with Redondo Beach, California.
All of which leads me to wonder: who in this community is setting their work in a specific real-world city? Is it a city you know well? Have you lived there? Did you make a trip for research? How much do you worry about getting the geographical specifics right?