2054
Libby had accidentally set her Windows 2000 machine to the year 2054. The symptoms were many applications crashing, having errors, and generally failing. By simply setting the date we could crash: PuTTY, OpenOffice, Internet Explorer, Outlook Express, Virus Scan, and ZoneAlarm. Pretty impressive. Maybe it's a good idea for someone who writes viruses! Wonder how different operating systems might handle this situation.