Our current neighbours aren't too bad. Parking is occasionally an issue, but that's more down to not thinking rather than anything malicious.
We did have one prize plum living next door to us for a while - I genuinely have no idea what he was doing, but every weekend there would be the sound of drilling and / or the hammering in of nails, and the Hoover would go on 6 or 7 times a day...
The bin wagon once 'swallowed' his recycling bin so rather than getting on to the council he just decided to help himself to ours - even though it had our house number on it. Luckily for him he wasn't in when I spotted our bin in his back garden and repatriated it - although his wife's face was a picture when they got home later and she noticed that "their" new bin was missing. Mind you, that is bad luck, losing two bins in one day...

He also caused no end of parking chaos. All was well until we got a new car, which seemed to cause him great offence and he started parking closer and closer to it, or having either of his offspring (neither of whom lived more than a ten minute walk away) drive round and park in the residents bay in such a way that their 3 cars took up 5 spaces. Best of all though was when he started parking half outside our house taking up two spaces - when we asked him why he stated that he'd changed the living room round and couldn't see his car from the sofa if he parked outside his own house, but he could if he parked outside ours!
We were most happy when they moved out.
