Physicists Leonard and Sheldon understand everything from the inescapable gravitational pull of a black hole to the intricate structure of the atom. But take those atoms and assemble them into a woman, and their comprehension comes to a grinding halt. And when Penny, a woman with all those atoms in the right places, moves in across the hall, Leonard and Sheldon's universe begins to expand in ways they never could have imagined. When series creators Chuck Lorre(Two and a Half Men) and Bill Prady(Dharma and Greg) combine equal parts science, superheroes and sex and add stars Johnny Galecki (Roseanne) and Jim Parsons (Judging Amy), the result is an explosively funny comedy for the nerd in all of us. *This product is Recertified. A recertified product is one that is returned by a customer, for whatever reason, and then restored to original working condition after undergoing an intensive inspection process by qualified technicians. The recertified product is then offered at a substantially discounted price. All stock of our current products are guaranteed to be in working condition and have been successfully tested for optimal performance. 7 day return policy is' in effect for both in-store and online purchases. See in store for more details.