Emilio Mata, VP, creative services, HBO, New York, joins Starz Encore Group LLC, Englewood, Colo., as VP, on-air promotion.
Appointments at Cox Communications: Donald Karell, VP/GM, middle Georgia operation, Cox Communications, named VP/GM, Wichita, Kan.; Sonya Middleton, counsel, General Electric, Atlanta, joins as corporate counsel, Atlanta.
