Donald Bellisario
From Battlestar Wiki, the free, open content Battlestar Galactica encyclopedia and episode guide
Donald Bellisario was a writer, director, and producer on the Original Battlestar Galactica. He is credited with writing or co-writing nine of the original episodes, and directing two.
After Galactica, he went on to create Magnum P.I., Airwolf, Quntauum Leap, and JAG.