Sumner Murray Rothstein. Redstone(AKA) was formerly the executive chairman of both CBS and Viacom. In February 2016, at age 92, Redstone resigned both chairmanships following a court-ordered examination by a geriatric psychiatrist. He was ultimately succeeded by Leslie Moonves at CBS and Philippe Dauman at Viacom, where he currently serves as chairman emeritus. Replace the D in Dauman and you get Bauman.