Jamie Kellner, a key figure in the expansion of broadcast television with the launch of Fox and The WB networks, has passed away at 77 after battling cancer. His legacy includes overseeing TBS, TNT, and CNN for Time Warner before retiring. Kellner's career spanned from guiding the development of Fox as its COO to founding The WB with a focus on family-friendly programming. He was known for his innovative approach to network television, launching shows like Married... With Children and 7th Heaven. Kellner's impact on the industry was profound, leaving behind a lasting influence on the landscape of television as we know it. Described as a visionary and mentor, he leaves behind a rich legacy in the world of entertainment that will be remembered for generations to come.