I've been knocked down twice. The first time in '94 by a transit driver who pulled out of a side road and hit me broadside (he claimed his windscreen was fogged up and was very sorry indeed, to his credit he gave me and my bike a lift home and a few quid to pay for the damage, thereby avoiding a lawsuit, says my cynical side) The second time, also in '94, by a driver who decided to pull over to the side of the road and neglected to notice me cycling alongside him!
It does appear, in my experience, to depend a great deal on the area you live in. Enfield and Harlow are both areas where I have encountered a vast amount of utter a**holes: drivers taking a left without bothering to wait for me to pass their turning seems to be a favourite. Blasting by me without shifting out a foot or two to give me room and occasionally clipping me with a wing mirror. One BMW driver even slammed her brakes on just ahead of me, leaned over and threw her passenger door open to brush some rubbish out into the road, I felt like deliberately slamming my bike into the open door just to make a point!
Since moving to Wymondham, however, I find that drivers here are far more tolerant, and always acknowledge me as a road user, even giving me a wave when I pull over in a passing place to let them by. So there's hope yet it seems, a far more chilled way of life and it's reflected on the road users (still has it's share of idiot drivers though)
I don't tolerate verbal abuse, and sadly my temper gets the better of me if a motorist starts to give it large, I end up losing it completely and abusing them right back, twice now I've chased down an artic driver for narrowly missing me and got them to get out of their cabs so I could yell in their faces.