My best crash was on a 400k brevet that started in an urban area at 4 am with temps in the low 40's. Just before sunrise and now into the countryside, I got to a metal grate bridge over a creek down in a hollow. Yes, it was covered in frozen dew. I was sliding and keeping it up all the way across (I hit it going very fast) until the end where there was a large metal lip. My turned wheel hit it, up and over with a tuck and roll....down a small ravine into a blackberry bush. Blackberry prickers on lycra is sort of natures velco. A hilarious mess. Just scratches......on the bike.
Probably worst crash was a broken seat post. I woke up to ambulance drivers around me. That killed my 1991 PBP plans.