I have quite a few minor scars, especially on my shins from mountain biking. I did sprain a knee and brake a finger, too.

As for the road, my worst was road rash and a lingering scar on my knee (chain slipped on an old Schwinn climbing a steep hill, over the bars landing on my knee) and scars on the middle knuckle of all four fingers on my left hand from a bad wreck as a kid.

I don't mind crashing too much as long as cars aren't involved and I (and my bike) can still ride afterwards. Scars just add character.