Is there a windows app or simple scripting way to persuade windows to shutdown after a process ends?

Is there a windows app or simple scripting way to persuade windows to shutdown after a process ends?

Can anyone suggest a way of asking Windows to shut down after it has finished doing something? For example it would be handy sometimes if burning a DVD or copying a lot of files to be able to set it off at the end of the day and just say "hey Windows, when you've finished doing this, shut down."