My only experience with one wasn't all that bad, but still kind of funny.

Client was charged with resisting/obstructing and disorderly conduct. Basically, the cops had closed a road because of an accident. Client was on his bike, and the officer told him the road was closed and he had to go a different way. Client flipped his shit, started yelling that the officer had no right to tell him where to go (yes they do), and no right to ask for identification (yes, they do).

Client finally started going an alternate route, and the officer was going to just let it go. But then he doubled back and tried to blow past the officer. Got arrested. Hired us.

I called the prosecutor to see what kind of reduction they'd be willing to do (standard procedure), and they were willing to drop one charge and reduce the other to an ordinance violation (pay a small fine).

Told the client this, who then flipped out on me for talking to the prosecutor without his consent (???) and without him there (which is, y'know, what he hired us to do). Fired our firm and demanded a refund. We all had a good laugh, and he did not get a refund.