WoW Stat is a World of Warcraft server monitor utility. All you have to do is set the server you wish to monitor. If your server goes down, WoW Stat will automatically notify you when it is back up, and even relaunch WoW for you.
After a couple years of letting this program sit and get a few hundred thousand downloads, I decided to redo the entire thing in Titanium with Javascript. I now have this released for both Windows and OSX, both open source and free. You can find the downloads over at the website.