High Quality Content by WIKIPEDIA articles! Midge Pinciotti and Bob Pinciotti are two fictional characters on the popular Fox sitcom That `70s Show (1998). They are the loving, lovable but dim-witted parents of the red-haired tomboy Donna Pinciotti (Laura Prepon), and Donna`s less-frequently seen younger sister, Tina. Midge was portrayed by Tanya Roberts, and Bob was portrayed by Don Stark.