I guess I'm just lucky. Outside of my neighbors kids being slobs, and the neighbor on the other side of me who owns "Barkbark" I have been very fortunate to have good neighbors....even Barkbarks owner is a pretty nice old guy. Heck when I was going out of the country a bunch last year the older couple that live across the street came over to let me know that they had been keeping an eye on the place and watching over my kids while I was gone. They even gave me their phone number so if my wife got scared in the middle of the night they would come over to comfort her. Very very fortunate I guess.
When I was in the military I had some neighbors that lived above me in my apartment. I could hear them fighting and going at it all night long. The husband was a huge guy, and his wife was little little tiny woman. I always worried that he was hitting her, so I had to call a couple times....I mean, the guy was 6' 4" and 350+ pounds at least and his wife was maybe 120. I finally talked with him one night, and we went out for a beer. The subject came up he he mentioned the police and such, but he claimed SHE was hitting him and he was such a big guy he didn't even fight back for fear of really hurting her. Did I believe him, maybe, but I was still happy the police broke it up on a couple of occasssions. Just goes to show you never know what's going on inside a house. Maybe your neighbor has a wife that just sits on the couch nagging him all day in and day out,"Herman, where's my Oprah magazine?", "Herman, where's my dinner?", "Herman, come rub my feet!"....hehe, maybe the only relaxation the poor old guy gets is watching the police tow your car....hehe...well at least he's transferring his aggression:)
There is some public legal councel, I would suggest going that route, although a bag of dog$#!t on fire on the mans porch always sounds good too. Not worth going to jail for though, be safe!