Heh, one time a naive co-op employee plugged a U3 drive into the Exchange server here, and it promptly crashed. From then on we haven't let a single co-op or intern anywhere near the physical servers.
I have a 4GB Patriot XT and I have that thing LOADED with about 3GB of various portable diagnostic and cleaning software. It is really nice to have when you are sitting at a computer with dial up internet and a Pentium III proc that is receiving Antivirus 2009 popups...