I thought about it while I was out on the ride and came back and called. They took a report. Said they can't do much once the person has left the scene but that there is a "cyclist reporting" thing or something similar. Basically, it's a place where they put cyclist complaints.

You guys are right. I feel better doing it (esp. if this guy hurts another person!). I think my boyfriend was just concerned that the police would be really dismissive and make it worse. A couple of weeks ago, a woman almost ran me off the road honking, blew through a stop sign, and this was all in front of a cop sitting in a SCHOOL ZONE. The cop did nothing. I think that was what made me think "they don't care".