http://www.downloadsquad.com/2006/05/26/gmail-remote-command-let-gmail-take-over-your-computer/

Gmail Remote Command(GRC) is a windows app that allow you to access your computers from anywhere through gmail. "A free Windows app that will check your Gmail inbox every 60 seconds and, if it sees you've sent it certain preconfigured keywords, will execute commands on the host computer" It allows you to run programs, open urls, or shut down your computer.

Sounds too risky for me, but it would be good if Google had a feature like this that is secure.

wow..
sounds cool..
but as or said..its probably not that secure.. :