People who try to undertake (overtaking on the left side) when I clearly have my indicator on, my wheels turned almost full lock to turn into the driveway, and am rolling forwards. I now do multiple shoulder checks while turning because of this. I witnessed some stupid lady take off this brand-spanking-new commodore's (I knew the guy, he had JUST bought it about two hours ago) front bumper, light and bonnet by doing just this in an old hilux. Not a scratch on the great beast of a vehicular contraption. She ended up paying more than the car was worth in repairs, fines and court cases.
ALSO
People who get right up your arse when you are reversing out of a parking spot in the middle of town. I was in an angled parking spot just yesterday, waiting for traffic to dissa[ate when I notice that the only car coming towards me was traveling at about 40 kms/ph and at least 300-500 meters away. So I decide to go for it. I reverse over the first lane to swing the car to the right, and head out of town, begin the swing, almost finish the swing when I hear an aggrivated "BEEP!" from behind me. That car that was 500 meters away had driven up to me, clearly able to brake, having seen me miles away, and gotten 15 cm from my rear bumper, stopping me from straightening out the car. I tried going into drive and into reverse again to give her a hint, but I hear another "BEEP!". I leant out my window and swore at her, and she moved her hand in a brushing movement. I had to (Illegally) drive into the wrong side of the road to straighten the wheels and head back over to my lane to go where I wanted.
I hate that lady, and I know her number plate, so even though I'm against it, Ima tailgate her to death.