This is a cool example of wire-sculpture: a single piece of wire woven into the shape of the torus.
http://makezine.com/2010/10/24/math-monday-wire-torus-challenge/
(I doubt you can play pool on this one, though.)
The author of the blog post, George Hart, is the proprietor of the soon-to-be Math Museum, and it seems he is something of a sculptor himself. According to the article, this piece was on display at a conference held by the European Society for Mathematics and the Arts.
Poking around their website and admiring the the multitudinous mathart is a pleasant way to pass a little time.