Infinity Broadcasting Corporation was a radio company that existed from 1972 until 2005. It was founded by Michael A. Wiener and Gerald Carrus. It became associated with popular radio personalities like Opie and Anthony, Howard Stern, Don Imus and Mike Francesa. Infinity merged with CBS Corporation in 1997 and later became part of Viacom in 2000, when CBS and Viacom merged. After the Viacom split in 2005, Infinity changed its name to CBS Radio.