SUNNYVALE, California, The City of Sunnyvale, long-known as the Heart of Silicon Valley, can now add a new accolade: The Happiest Place in America. And it must be true, because Dr. Oz, a popular television physician who deals with a wide variety of informational topics on his Fox TV Dr. Oz Show, gave the nod to Sunnyvale. In his show, Dr. Oz says that he looked for the happiest city in America and, with some help from the Gallup-Healthways Well-Being Index, he found Sunnyvale.