James McClain Though he exited the top dog role at WarnerMedia over the summer, veteran Hollywood exec Robert “Bob” Greenblatt — the 60-year-old former chairman of NBC Entertainment — can still feel kingly in his supremely grand new mansion, which was acquired at the beginning of 2020 and has been undergoing renovations ever since.Greenblatt paid $15 million for the hilltop property, which sits in the mountains high above Beverly Hills, in a pricey neighborhood known as Beverly Hills Post