Here’s mine. These are all true, been there, done that.
1) Guy sends voicemail bragging about affair with supervisor (female). Accidentally forwards it to entire company. Was seen begging the PBX admin to somehow stop the message.
2) Worker caught stealing a computer monitor.
3) Worker caught printing porn on shared color printer.
4) Manager making 900-sex-phone calls on office phone, using corporate credit card to pay.
5) Firewall admin pushes bad firewall rule, servers get hacked, he deletes and corrupts logs to try to cover his tracks.
6) Using overtime to do college homework.
7) Clocking-in at 8am, checking out company vehicle, driving home to run landscape business, returning vehicle at end of day and clocking out.
8) Bringing loaded mac-10 assault rifle to work to show co-workers new modifications (three shots per squeeze).
9) Dropping 5 IBM mainframe disk arrays with approximately 3TB of production data off the back of the truck when pulling away from loading dock (forgot to close truck tailgate). (disaster declared, backup tapes used)
10) Server admin claims his server admin accounts were hacked, but he was doing it himself when under the influence of crystal meth, then forgetting about it once the drugs wore off.