I live in NYC. Everybody yells at everybody. In all seriousness, though, I have generally been impressed with how congniscent drivers are of bikers. Part of it is that in Manhattan and Brooklyn traffic is such that bikes are generally not slow-moving vehicles, and part of it is that there are a lot of bikers here: delivery people, commuter, serious road bikers, leisure riders, etc. The biggest problems are delivery trucks, city buses (who have to be aggressive to get their people where they are going), and PEDESTRIANS, who wander out into the street without looking because they don't hear an engine.