I stumbled across this hilariously awesome webcomic
Mike the Bookseller about a year ago and I've been loving it ever since. And as someone who also works in a bookstore, I can verify that some of the episodes are scarily true to life (though I like to think my boss isn't as horrible as Lark or Pat).
These two in particular get inflicted on me on a regular basis:
http://www.krrobar.com/mikebookseller/comics/12.htmlhttp://www.krrobar.com/mikebookseller/comics/3.html A tip for people - if you're looking for a particular book, it really ups your chance of success if you know the title or author before you corral us into helping your search. And for the love of God, THROW YOUR DAMN PAPER COFFEE CUPS AWAY!