Now, don't get me wrong. I thought "Good Will Hunting" was a very good movie and am glad it won a couple of Oscars. And it does a far better job at capturing the real Boston than, say, "Celtics Pride" or "Blown Away" (to the point of including a line that only a local who was around before CharlieCards would understand: "He wanted to get you a T pass"). But even a movie written by a pair of locals has its errors:
Mind your Ps and Qs
When Lambeau goes to the boiler room to find out who the genius kid is, the head blob janitor eventually pulls out an index card that lists Will's address as "Q Street." There is no Q Street in South Boston (or anywhere else in the city).
Who da Man?
When Will walks out of court, he crosses in front of a blue-and-white "Metro Police" car. Boston no longer has any Metro Police, but even when we did, their cruisers never shared the blue-stripe-on-white scheme of Boston police.
Next stop: Quincy-Adams
Quick geography lesson: MIT is north of South Boston. Dorchester is south of South Boston. So why was Will always shown going through Dorchester on his way home from MIT? Maybe he was so deep in thought he kept missing his stop?