Cable and media giant Viacom's (VIAB) Q4 profit rose 28% to $1.55, beating estimates by 11 cents, aided by the box office success of sci-fi zombie movie "World War Z" and higher ad sales. Revenue climbed 8.6% to $3.65 bil vs. views for $3.6 bil. Media networks revenue grew 7% to $2.46 bil on higher ad prices and affiliate fees. In the Sept. 30-ended quarter, Viacom (VIA) repurchased 33.7 mil shares with an aggregate price of $2.7 bil. At quarter's end it had $9.63 bil left in its $20 bil buyback program. Shares fell 2.8%.