there are moments where you fall victim to your own device. Since this is a Techie community, i am not afraid to post this, knowing that this will be used Wisely!
if your PC installs patches and warns you that the device is going to be rebooted soon, try the following
1. Open a CMD prompt with Admin credentials
2. type in Shutdown -a
3. this should abort the shutdown until you manually initiates it
with all said, sticking to the norm is sometimes the best option. but, there may be moments that this comes in handy :).
this post describes more fun extensions: http://technet.microsoft.com/en-gb/library/bb491003.aspx