At ifcars suggestion, here's a thread where you can tell us what some of the weirdest, or just plain stupid, wrecks you've seen/been near are.
My first one: This actually happened to me when I still had the suburbans.
Crossing a pretty major intersection in town, my light had just turned green a few seconds ago, and I didn't see anyone, so started to go, and wham, got T-boned by some guy in a hatchback. Turns out, he was driving with his right leg in a half-cast, because he broke his ankle, and he got it stuck on the accelerator, and couldn't get either of his feet to the brake pedal. I thought driving with a broken ankle and big bulky cast was pretty stupid.