When I was about 17, I knocked over a street light and totalled a car while I was going to pick up a pizza during a blizzard. I'm just glad I had my priorities in order.
Other than that, I was in a car accident once where an elderly woman blew through a red light and hit me after she had been at the hospital visiting her husband. I went to the hospital (hey, we were right outside!) to get checked out because I hit my head, but I was fine. My poor car, on the other hand, is no more.
Edited to add: Oh, I forgot my most recent one. My boy and I were having a big argument and I went out for a random drive at around 3am. I was on the west side of Chicago in the ghetto, and I totally rear ended someone stopped at a light. The guy was really, really nice and told me not to worry about the damage I did to his car.