Back home, it's not really customary to talk to your neighbours unless you already know them, so I don't really... even know who they are? I dunno, the whole "knock on the door to introduce yourself" would be considered creepy as ♥♥♥♥ there, so nobody does it.
Back in my childhood home though, my neighbours sucked. To cut a long story short, among them were a violent couple beating each other to hospital all the time, a junkie who never cleaned, a pyromaniac who eventually burned the place, old people who kept dying, drunkards who pissed in the elevators and gang members whose fault it was that the hallways were often bloodied. Funtimes.
Also, there were creepy twin girls who I'm sure were actually robots and planned world destruction. They had the most soulless eyes I have ever seen in my life, and they would just pop up randomly out of nowhere and stare at you, wordless, until you were out of their line of sight. I swear, those girls came straight out of a horror movie of some sort. They could've made big money as movie stars.
Right now I'm living in a dorm, so I know a bunch of my neighbours, yeah. They're pretty cool, even if they have ♥♥♥♥♥♥ taste in music and don't know how to flush the common toilets.