Here's a coupla more of my favs...

1) Blowing red lights on a left turn 5-10 seconds after their direction went red. Screws up traffic coming the other direction because some putz boy can't wait 2 minutes for the next light...

2) During rush hour - piling into an intersection when traffic isn't going anywhere to beat the red light - jamming the other directions because they can't get around your sorry ass.

3) Parking in a handicapped spot so you can conveniently pick up your laundry, theater tickets, carry out food, etc - without a handicapped parking permit - because you're too friggen lazy to walk an extra 100 feet or so...

4) Deciding that stop lights are a great time to break out all of your directional maps so you can intensely study them - through the entire light cycle...

5) The dumbass who rides in the left lane and then decides 500 feet before an exit he needs to cross three lanes of traffic to make it...

6) Idiots who speed up to make an on-ramp in front of you while you're trying to accelerate up to highway speed as he slams on his brakes...

7) On the same note - the dipwads who are looking for an even numbered address on the odd side of the four lane street - creeping along blocking traffic - and then deciding they passed the place and need to cross two lanes of traffic in order to get turned around - and they are totally incapable of comprehending that you can drive a short 500 feet down the road and make a right/left turn in the turn lane to safely make a turn around... And everyone else is an asshole because they're not yielding to him as he pulls an incredibly daring U-turn maneuver involving all four lanes during heavy traffic...

8) Crackheads that pull up alongside of a cop who's on a traffic stop (blocking BOTH traffic lanes) on a stretch of road that's 50 MPH, looking to get directions...