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Lol I was inovating on the post above mine, but now that I think about it - my switch is in the next building so that would be remote! :) Hmm, makes me want to google something like "ethernet...

I would guess if you hooked an ethernet cable up to a decent power supply you could "pulse" some voltage and damage a switch or router.

The CD tray and Overclock examples raise some insight. Many of todays computers and devices have some control over the physical environment indirectly. It definitely could be possible to figure out...