Unique Pull Out Shelves and Sliding Shelves for Kitchen and Pantry Cabinets. Lazy susans for cabinet corners,
http://www.kitchenslidingshelves.com/

First time I saw these shelves was in Budapest, at a friends apartment. I was told they had been designed by a physicist...
http://www.instructables.com/id/Hungarian-Shelves/

Learn how to build and install "floating" wall shelving; includes plans and step-by-step instructions along with tips, materials, and tools lists.
http://www.ronhazelton.com/howto/bedroom_shelves.htm

Ace Hardware - Building Shelves You can use simple dowel pins instead of metal brackets to make adjustable shelves (see image). Insert the dowel pins in the drilled holes.
http://www.contemporary-shelves.com/make-shelves/

This Into That offers functional art furniture, primarily book shelves on any theme. Each is made by Jim Rosenau at his studio in Berkeley, California
http://www.thisintothat.com/secondeditions.html