Take a deep breath and remember - just because that person in the cage is having such a crappy day, is late to work, maybe has a truly horrendous situation of some sort they're dealing with in their life, to the point they're acting out like that, you don't have to let it ruin your day.
Take a few deep breaths and count your blessings. Start with the fact that you didn't kiss the pavement, and that you're life is probably going better than that person who's loosing it behind the wheel. It's possible she'll even regret her behavior once she has a chance to reconsider it. (I only say that because sometimes I have.)
Next use it as an object lesson on defensive riding. While it's true there's really next to nothing you can do if someone is hell bent on running you down, 99 percent of the time right hooks are avoidable - but it takes diligence. I've had my fair share of close calls and even hit the pavement a couple times. And I realized I had to use those experiences to evaluate and modify my riding in order to stay safer. I now really pay attention to how I am positioning myself whenever approaching an intersection or any driveway. I really make an effort not to enter anyone's blind spot when they have an opportunity to turn right, for instance.
Of course like I said; if someone is passing you, knows you're there and is blowing their horn and in effect telling you to **** off and get out of the way... I think karma will catch up to them. Try not to make your day worse with an assault charge. Chill out and have a great ride home. You won.
DanO