Stephen_J._Cannell--Garry_Marshall

Stephen Joseph Cannell (; February 5, 1941 – September 30, 2010) was an American television producer, writer, novelist, occasional actor, and founder of Cannell Entertainment (formerly Stephen J. Cannell Productions) and The Cannell Studios.
After starting his career as a television screenwriter, Cannell created or co-created several dozen successful TV series from the 1970s to the 1990s, often with his creative partner Frank Lupo. Cannell's creations include The Rockford Files, The A-Team, Renegade, The Greatest American Hero, 21 Jump Street, and The Commish. He also wrote novels, notably the Shane Scully mystery series.