In the movies section, a fair ways back.. I believe early-mid BC, there's a post from a 1x Disc Priest + 4x Affliction Warlocks. Pretty sure this was the thread: http://www.dual-boxing.com/showthread.php?t=9348

It shows they are a powerful choice, that fear sucks pretty badly against them (although with interact and click to move, it's a lot easier to recover), also shows some things that killed them.