I had a rather amusing encounter with a car today when I was cycling home. I was cycling along at a decent pace, nicely tucked into the side of the road. Suddenly, a small van appeared at my right shoulder as I came up to a left turn. He had his indicator on, and started moving left, as if he was about to make the turn. By this point, I was already starting to cross the mouth of the junction, but rather than hang back and make the turn behind me, he edged his van closer and closer to me, all the while staring at me. I maintained my course, and he ended up stopping past the turning to the left lane, and across the right hand lane, blocking the traffic that was trying to join the main road!
I had a quiet chuckle to myself as he got resoundingly hooted at, but WTF was he thinking? That he could intimidate me in to non-existence?
I also saw a car go through a red light at a pedestrian crossing. He stopped to let the pedestrian across, but then drove off whilst the light was still red. I waited for the light to change before catching him up in the traffic ahead and giving him a 
look.
I also had a driver wind down her window as she stopped next to me at the lights and say "Do you know that there is a cycle path over the bridge [that we had both just crossed]?". I don't know if she was just trying to be helpful or making a dig that I didn't use it, as the lights then changed and she drove of, after I had replied "Yes, thanks". I am well aware of the path, that is right next to a busy footpath, so that people are always stepping into the cycle path without looking behind them. I like to go far too quickly to make it safe for me to use the path, so would rather take my chances with the road traffic, which has two lanes in any event.
I didn't see any cyclist disobeying the highway code.