wwPCRemote lets you remotely control your PC using your iPhone. Things you can control include: - Devantech USB relays, which let you turn on and off lights in your house, open / close your garage door, etc., - Hardware and software that react to UDP messaging, - the restarting and shut downing of your PC and other PCs connected to yours over your network, and even - turning on other PCs connected to yours over your network