I've seen...
A brand new Porsche 911 Turbo...towing a trailer with a wave runner on it.

A Mazda MPV attempt a U-turn at a speed that an Elise would have had trouble with. It ended up on its roof right in front of me.
A home window A/C unit mounted to a board facing into the slider window on an old pickup, complete with duct-tape insulation around the edges
A utility truck half-up on one of those 4 ft high concrete dividers. The driver's side was way up in the air, and the passenger side was still on the ground...the whole thing looked like it was going to tip over any moment. The front drivers' side wheel had been completely sheared off from the impact.
An old pickup, pulling a trailer, going the
wrong way on an expressway at 11PM. :Q
A MASSIVE deer carcass that appeared in the left lane on the expressway, JUST after rounding a bend. I couldn't avoid it, and trucked over it in my Trans Am at about 80 MPH. The impact bent the driver's side tie rod all to hell, messed up my air dam, screwed up my brakes, and got rotten deer meat and fur all over my car. I had to pick deer guts out of my brake calipers with a pliers - and my car smelled like rotting meat every time the exhaust warmed up for a good 8 months after that .