Calling All Readers

I'm beginning work on my graduation lecture for VCFA, and could really use your help. Can anyone recommend a book in which an urban writer has written a rural, small-town character badly, or as a caricature? (I'm thinking the book equivalent of the Cohen Bros. movie, Fargo.)

I'll be lecturing about writing rural characters -- and would love to gather some examples of authors who've done it poorly, using:

* exaggeration
* generalizations
* belitting or contempt
* humor that laughs at, rather than with, the character
* overemphasizing rural dialogue

The character can have a fleeting role in the book, or can be a main character. Please let me know if you have any recommendations. I'll be eternally grateful! Thanks!