Mac OS X Hacking Tools

I was reading Mac OS X Hacking Tools and thought, "I could use the "/usr/bin/say" command to make the iBook at the Houston office speak to people in the server room." Then I thought a little bit more and thought, "I wonder if 'Mac mini Hosting' is going to disable the speakers on those buggers. Otherwise, they are going to have a whole bunch of computers whispering to the system administrators, 'Psst, hey, reboot me!'"