I’m not sure how practical this is, but it’s extremely cool.  The Bookcase Door System from Woodfold offers a unique space-saving option from closets and pantries to safes and hidden rooms; can’t find a suitable place for your bookcase, just park it in front of the doorway! 
Woodfold’s Bookcase Doors are custom crafted to support up to 500 pounds, yet the heavy-duty roller system allows the bookcase to quietly open and close with a smooth easy motion.  You can tell a lot about a person from their bookcase!

Perfect for high speed channel surfing!

Looking like the back end of a landspeeder, I like to call this the Star Wars Couch, although the designer, Philip Grass prefers to call it Accelerate. The above image is a digital prototype with the conceptual structure made of polyester resin, upholstered with polyurethane foam and topped with white leather. 
If this ever goes into production, Philip better be careful that George Lucas doesn’t come after him for the rights.