I remember growing up the wide spread concern over Y2K leading up to new years eve 2000. There were dire warnings that stock markets would crash, power plants would fail, planes would fall from the sky, and the US economy would be in ruins. To prevent this, there was a massive effort to reprogram computers to handle the date rolling over.

January 1st came and went with barely a hiccup, so I guess it worked, but how close was the US computer infastructer to failure? Were any other countries ignore the worries and suffer negative effects?