logger Tim Matheson has an interesting tutorial for remotely shutting down Windows via SMS and Outlook.

Basically you setup a rule in outlook to look for say a keyword in the subject line of an email. Then you select run application as the action for when that keyword is found.
Actually, Tim has already done the work for you, so all you have to do is download the batch file and follow his directions. When you send an email with "smsshutdown%% in the subject, Outlook runs the shutdown script. Course, you may want to change that keyphrase to something else now that the whole world is aware of it, but this is a cool idea nonetheless.

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