Yes, it ticks you off and makes you want to retaliate. However, in today's society of mental misfits, career criminals, and gang banger wannabe's running free and killing people for no reason whatsoever, it isn't worth the cost. Furthermore, if you did catch the guy and whip his ass, how much would you like to bet that you would be the one locked up in jail and the defendant in a civil lawsuit? T-Mac has the best advice, and we would all be wise to heed it.
I originally started to post something about contacting CHP right after the original post in this thread, but then decided to delete it before hitting the post button. However, once you have the license number that is in fact the right thing to do. This person didn't get you, but he may be doing this to plenty of other folks also. I'd hate to think I had information that might have got him off the road before he pulled this little trick on someone else and killed them, but I failed to pass it along.
Jerry