Joshua Ian Schwartz is an American screenwriter and television producer. Schwartz is best known for creating and executive producing the Fox teen drama series The O.C. which ran for 4 seasons. Schwartz is also known for developing The CW's series Gossip Girl based on the book of the same name and for co-creating NBC's action-comedy-spy series, Chuck. At 26, he became one of the youngest people in network history to create a series and run its day-to-day production when he ran The O.C.