Another to add to the list....

High school kids who just got their drivers license and are driving mommy/daddy's porshe or SUV and think that when the light turns green it means "Floor the accelerator and see how close to the biker we can pass while yelling obsceneties(sp?) out the window."

And the kids in the Japanese cars(no offense to Japanese cars, they actually are nice cars) with the huge spoilers and coffee can muffler. They seem to rank up there with the soccer moms and their SUVs.