For me, I havn't had it bad yet, my worst crash would probly have to be when i was hitting a decent size gap (bout 18 feet long). so i picked up my speed, and zoomed down the hill. i hit the gap no problem, cleared it, but when i landed i crushed my back rim (rhyno lite) and slid out, i slid until i hit a bicycle path and flew over it, landing on a hill. i was not physically hurt, except for Big Jim and his soldiers, but the worst part was before i hit it i claimed it was overrated and really easy. i walked home that day.
Please tell your worst crashes.