i particularly like the work of Peter Callesen and Elisa Mora (though anyone who knows me knows i cant resist a good fold or cut of paper! haha)
The work on here by Brian Dettmer, Su Blackwell and Ingrid Siliakus is probably more Artist Book Relevent, but this whole page in general is quite inspiring.
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http://www.webdesignerdepot.com/2009/05/100-extraordinary-examples-of-paper-art/