Donald P. Bellisario is a television producer and screenwriter.
 For example, besides his leading role as Jack Bauer in 24, Kiefer Sutherland was credited as producer during the show's second season, then rising to co-executive producer from season 3 to the last few episodes of season 5, from where he was finally promoted to executive producer
 Similarly, Tom Welling, the star of the CW show Smallville, became co-executive producer for the show in season 9 and executive producer in season 10

