Space-saving furnishings are typically boring or flawed -- the Murphy Bed converts from a bed to a nothing, and the futon morphs from a wildly uncomfortable couch to a wildly uncomfortable mattress. Now, you can have your pool table and eat on it too: the Fusion Table
The brainchild of Belgian company Aramith (No.1 maker of billiard balls worldwide), the Fusion's a dining room table that transforms into a pool table/felt-laden gaming setup, simply by removing the top -- is there any happiness that action can't bring you? Tables come in either all-wood (e.g., light oak, walnut, cherry) or w/ metal legs (aluminum or stainless steel) propping a wood veneer top; all balls/cues/racks stow under the tabletop cover, Easy-Lifts give the legs a little height-boost, and innovative memory-nylon stretch pockets compensate for the table's lack of depth (if Paul Walker had these, look out Daniel Day Lewis). To impress both dinner guests and discerning degenerate gamblers, all materials're the finest: Malaysian wood, Brazilian slate underlying the felt, and Belgian metal -- also a genre that produced memorable bands like "Brussels Sprouts Evil" and "Satan's Waffle"
Tables ship unassembled, so you'll have to use Fusion's recommended national installer (you'll get a discount), call your local handyman, or brave construction yourself -- although if you do, you will probably end up converting the table to a nothing.