One time I was heading back to the office after lunch, and I was halfway through crossing the road when out of nowhere a car clipped the curb right in front of me going about 40mph and launched in the air, crashing into a powerline and bringing it down. The phone lines all came falling down right above me so I had to throw myself out of the way to avoid being hit by them.
The guy was alright, and I told the police he was going the speed limit even though he wasn't because his really nice BMW had just been totalled and I didn't want to add to his woes.

Also, just a couple of months ago in America me and some guys were road tripping to D.C. and the sat nav took us through the worst part of Baltimore at midnight, and as the (rented) car was turning a corner some crazy women came speeding through a red light and crashed into the side of our car. As you can imagine us white British tourists were extremely scared and as soon as the police came they told us to drive what was left of the car out of here as fast as possible.

Yeah, good car crash experiences. No more please.