Oy, you want malware related hell?  I worked at a computer camp for a few years - lots of fun, great people, but every so often we'd have to disinfect the computers because the young 8-16 crowd we catered to didn't always know better.  Most of the computers were dealt with easily, some were not.  The computers we used for machinima [good ol pre-Source half-life 1 machinima 

] I remember sometimes had upwards of 600 - 1,000 pieces of crap detected.  I don't think it would be a stretch to say I probably experienced nearly every piece of malware for the time just by working at disinfecting those computers.