I got into a bad car crash at midnight in a really bad part of baltimore a year or so ago when I was road tripping the US, that was pretty damn scary, there were so many dodgy people around.

Also, when I was in the middle of crossing the road once to get to work, someone clipped the curb right in front of me at about 40mph, went flying off the road and crashed into a telephone pole. This sent the telephone pole crashing down toward me and I had to jump out the way.
I also had to phone the ambulance for the guy and give a police statement. Thankfully no one was hurt, and I even told the police he was going the speed limit when he quite clearly was going about 10 over. I was the only one who saw, and he had just totalled his new BMW so I think he had already learned his lesson.