Belkin's Wemo[1] line does pretty much what you're suggesting. I've got a few of their units, and I've been pretty happy with them. [1] http://www.belkin.com/

Belkin's Wemo[1] line does pretty much what you're suggesting. I've got a few of their units, and I've been pretty happy with them. [1] http://www.belkin.com/wemo/ http://www.belkin.com/wemo/