The loony letter is a true art form. Well-worded missives with just the right touch of sarcastic humor can deflate the pompous and get the point across in ways that a standard business letter never could. Sometimes it's the nature of the exchange itself which tickles our fancy.

Some of these letters were actually sent by real people, some were composed as works of fiction, and some we honestly don't know about. You'll have fun with all of them anyway.