Angela Candace Santomero (born April 26, 1968) is an American television producer, writer, and media executive, best known as the co-creator of the landmark Nickelodeon series Blue's Clues and the creator of PBS Kids' Daniel Tiger's Neighborhood and Super Why!. Holding a master’s degree in child development and instructional media from Columbia University's Teachers College, Santomero pioneered research-backed, interactive educational programming for preschoolers. In addition to co-founding Out of the Blue Enterprises (now 9 Story USA) and serving as Chief Creative Officer for 9 Story Media Group, she created and executive produced series including Creative Galaxy, Wishenpoof!, and Netflix's Charlie's Colorforms City. A multiple Emmy and Peabody Award winner, she is widely regarded as one of the most influential figures in modern children's television.