I hit a stopped car one time because I wasn't paying attention. Totally my fault.
I've never been hit, though I've had 2-3 close calls (generally when people pull out in front of me).
Nobody's ever thrown anything at me.
I've had plenty of solo crashes, none serious, and almost all because I did something stupid (hey guys, watch this...).
That's in 10-15 years of riding, at least part time, for recreation and transportation.
-DR
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'08 Bianchi San Jose
'06 Giant OCR C3
'04 Specialized Hardrock Comp