@dondare: I agree entirely.
@Rob3rt: I got shouty, which wasn't good. But I saw no point in hitting the guy back. First time my priority was to get the Police summoned, which was how he got to throw my bike as I only had one hand available.
Oddly enough, last time I needed to 999, for another chap who was left-hooked and ended up with a broken pelvis, I was also assaulted by a driver - that time, by hitting me in the face with a rolled-up newspaper, which was pretty funny in retrospect. Good thing he did, though. It was only when I decided to press charges for assault that the Met discovered the file had been lost...