Abort System Shutdown
This is a little addon that will PROMPT in WMC if the computer is scripted out to reboot the PC at times, in using the shutdown command (i.e shutdown /r /t 120 /c "Rebooting in two minutes" ) This will allow the user to cancel the shutdown.
I was the member that he created it for (DavidinCT)
Neat little add-on if you use scripts to automate your system a little (scheduled reboots, etc)
EDIT: link is dead, If this is needed PM DavidinCT in the forums, I should be able to provide a copy of it.