1. Downstairs neighbor's toddler would run around their apartment stomping as hard as he could. Luckily, this didn't last long.

2. Next door apartment was populated for some time by at least 5 or 6 gentlemen that appeared to be part of a Puerto Rican gang. We really didn't have any problems with them....except for when they apparently didn't pay their electrical bill and decided to light their apartment using candles. Didn't much care for the couple of months waiting for the building to burn to the ground.

3. Same apartment, but a new couple who were both bad drunks who would scream at each other every once and a while when things got bad. From what I could get through the wall , he apparently gave her a STD, which didn't go over well.

4. Now, happy in our new home, we have a loser next door neighbor that puts no effort into his yard. Two years ago, he put maybe $15K into a full yard over-haul, which look amazing. Two years later, all of the beds are over-run with weeds, many of which are well over 3 feet tall....what a total waste of money....Jackass.

Not as bad as some of those above, but these are my fun experiences.