I have a new favorite:
http://clientsfromhell.tumblr.com
Particularly epic:
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We were presenting several print concepts to a national milk board, promoting milk as a healthy drink. Obviously a few of our concepts had pictures of cows in them, to which the client said: “NoNoNo, we can’t show cows in our ads. Our customers will find it disgusting when they realize that milk comes from cows.”
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