Something that popped up recently, and does exactly what I want it to, is server monitoring. It is very simple, nothing like Nagios or other complex system analytics. You create a monitor check, for either ping, HTTP or TCP. It will e-mail you if it fails. That is all I need, and a $1.50 a month is worth it to me. I’ve set these things up before, but then I have to make sure that computer is running.
Peace of mind. ^_^