Mine would have to be the time I was using a Large Size map to make a big city, with small neighbor connections. My large city grew to about 850,000 pop, had great healthcare, jobs, education and saftey. One of my medium size neighbor connections however, I guess kept commuting back and forth to the big "Capital" city and conditions here were HORRENDOUS! No health, no saftey, riots and fires all over the darn place. It was kind of cool to see the chaos, and the horrid conditions here just went to make my capital city all the better.