Cop Rock: One of TV’s Great Experiments, Finally On DVD In 1990, Law & Order and Beverly Hills 90210 premiered; so did The Flash—you know, the first TV one, starring the current Flash’s dad, John Wesley Shipp. But for Steven Bochco—the man who brought you Hill Street Blues, L.A. Law, and NYPD Blue—1990 was his year to conduct a grand experiment that crashed and burned: Cop Rock, the world’s first police drama with law enforcement officers and criminals bursting into song, came and went in 11 episodes, few of which were watched by anyone in America even though the show aired on ABC.