I agree with Tom 100% on people who "call for help" when they are stopped for a violation. And when parents show up, it is a ticket every time.
Sergeants who question your tactics and decisions who haven't moved out of the office or actually been on the street in more than a year.
People arrested for DUII who ask you why you're not out arresting "real" criminals.
Child molesters who say that the child "wanted it".
People who drive 45 miles and hour in a 55 mile an hour zone because a marked patrol unit is behind you.
People who stop abrubtly in the left lane when they see a marked patrol unit with its lights and siren on...or who fail to see said unit, and peer ahead, trying to figure out why every other car on the road has pulled to the side.
Sopranos and violins.
Letting your dog poop in my yard, and not picking it up.

Throwing trash in the bed of my pick-up.
Spilled microbrew.
CMB in a container.