| Description! ||Sheldon worries about the approaching Christmas holidays and his indecision on what present to get Penny. After deciding on a basket of bath items, he discovers a wide selection of them is available; unsure of what Penny is going to get him and thus what sort of reparations will be appropriate, he buys an entire array to cover all contingencies. Penny’s gift—a napkin both autographed and used by Leonard Nimoy, thus containing DNA for Sheldon to clone his own Mr. Spock—is so extravagant that he gives her all the baskets and a hug.
Meanwhile, Leonard meets visiting researcher Dr. David Underhill (Michael Trucco), who is an experimental physicist like he is. Although Leonard envies David for being handsome, charming, cool, and a more successful physicist than he is, he still jumps at David’s offer to help him in his research. However, Leonard’s joy of hanging out with David is hampered by jealousy when the latter meets Penny, and the two start dating—but soon after, Penny breaks up with David after learning that he recently married.|