In my first flat had two mental neighbours. One was a ned who used to party with forty of his mates every Wednesday at 3am,all doing the bouncy. They used to square off in the close, smash windows, the ned once punched me (fuckin feebly may I add) and he even got arrested for answering the door to the police as he had a machete in hand.
Other neighbour was fine until summer. Would get drunk in the garden on hot days, be generally creepy when you tried to make conversation and once you returned to your flat would try bash your door down just to talk.
Oh and the downstairs neighbour had an absolute c**t of a terrier that always tried to bite you. Ahhhh Paisley.