• Shut down the computer at certain hour (e.g. at 12:00).
• Shut down the computer in several minutes (e.g. in 15 minutes).
• Shut down the computer when the CPU becomes idle.
• Several types of shut down (shut down, restart, log off, power off, suspend, hibernate and lock computer).
• Option for hang up the modem instead of doing a shut down.
• Option for set a password to protect the access to the configuration.
• Complete command line support for batch process.
• Option for capture the desktop and/or execute a program before the shut down.
• Option for run the program when starting Windows session, for daily programmed shut down.
• Immediate shut down and computer lock from the traybar icon menu.
• Option for show an alert window, which allow the cancellation of the shut down.
• Works with Windows 9x/Me/NT/2000/XP.
• Dual English/Spanish version.

Handy when you want your machine to power down when the massive demo has finished downloading - doesn't work with Vista yet though

http://www.ampsoft.net/utilities/WinOFF.php