2 eggs. I got lucky though. One egg missed completely, and the other hit my passenger sail window. However, said window was open a little, and when the egg hit it, some of it splattered all over the interior of my car. There was crap on my headliner, on my front seats, on the dash, some ran down the door panel...
This wasn't a random incident, either. At least 2 other co-workers (one of whom lives CLEAR on the other side of town from me) also got egged. In both cases, the houses and/or cars next to them were completely ignored. So we were specifically targeted.