You might say this company has a real eye for broadcasting. CBS Corporation is a leading mass media conglomerate with television, radio, online content, and publishing operations. Its portfolio is anchored by CBS Broadcasting, which operates the #1 rated CBS television network, along with a group of local TV stations. CBS also owns cable network Showtime and produces and distributes TV programming through CBS Television Studios and CBS Television Distribution. Other operations include CBS Radio, CBS Interactive, and book publisher Simon & Schuster. Chairman Emeritus Sumner Redstone controls CBS Corporation through National Amusements.