CBS

CBS, along with NBC, ABC and FOX, is one of the four major American radio and television broadcasting networks. The company was purchased by Viacom in 1999, but this merger was dissolved in 2005.

CBS Radio was there during the pioneering days of radio in the 1920s -- one of the first successful nation-wide networks of radio stations. Legendary broadcast journalist Edward R. Murrow worked for CBS. Orson Welles' infamous October 31, 1938 broadcast adaptation of H.G. Wells' The War of the Worlds was broadcast on a CBS station. Landmark television shows like I Love Lucy and Gunsmoke began as CBS radio shows.

Today, CBS airs popular shows like respected television news magazine 60 Minutes, reality programs like Big Brother, and situation comedies such as How I Met Your Mother.