The one I love to hate is "the creeper".
You know, the person who keeps inching up past the line at an intersection well before the light turns green. Or maybe they've stopped a whole car length or more ahead of the line and the sign that says "STOP HERE ON RED".
This one is a cop!
What I really enjoy is watching drivers wanting to make a left turn get stuck at the light because they've pulled up beyond the sensors that trigger the left turn arrow light.
I get a special joy in that. I'll even go out of my way and not turn left at that particular intersection if I see a creeper ahead of me.