My favourite at the moment has to be pedestrians who step out in the road and then look too see if there is a car/cyclist coming.
Also driver's who block cycle sections and those who try to turn into your path when you have right of way.
My favourite part at the moment is catching up with red light jumpers repeatedly, overtaking and then again and again.
almost ran one of he local school mothers over the other day going 22mph down the road, good for her I wasn't going 30-40 like you can on this road...
she didn't even look if anything was coming and only realised I was there when I pretty much leapt forward off my bike to try and stop the last 5 mph with my feet so I wouldn't hither.
Now I have cuts all over the back of both calves where the pedals whacked into the back of my legs when I jumped forward.
basically my bike basically crashed into my own legs which I thought was better than into her and I didn't even get an apology from her at the time.