Ever wonder what the AppleCare rep you're talking to really thinks about you and your problem? Well, after reading this you might not want to know. Adam Knight has recently left his job in AppleCare for greener pastures and he has written a lengthy post about what it was like. It seem that there was little room for advancement (though I think this isn't a slight of Apple's, rather a common Tech support dilemma).
Adam still likes Apple, he just doesn't want to work for them anymore.