The one I always liked was when I would pull onto 2nd Avenue downtown, taking enough of my lane that no one could get alongside me. And while sitting at the red light, I would watch my mirror and see someone driving up behind me in my lane.

I would often see them spot me and make an abrupt lane-change to the next lane over (there are three lanes), thinking I would wobble feebly off the line at the green light, and be an easy pass. So it was rather satisfying, in an evil kind of way, to do exactly the opposite: at the green light, I'd be most of the way across the intersection before they could even move their foot from the brake to the gas, and then keep the acceleration on all the way to the speed limit (or beyond).

I sure miss my road bike, it's harder to justify my avatar using the mountain-commuter bike. But I still do my best... *evil laughter*