Sticking with the Boston theme for a moment, here's a piece on William J. Monahan, the screenwriter for The Departed.
`` Boston is what I knew. This was always going to be a character piece, a tone piece as well as a thriller, and I wanted to use the people I knew about. I was thinking about the past, the people I'd lost, and what it was a like for me as a kid in Boston, being angry and not knowing where to go or what to do. I was thinking about the mysteries of an Irish Catholic upbringing I hadn't solved yet."
Here's the full story.