"Hill Street Blues" was a popular police drama that ran on NBC from 1981 until 1987. The series itself takes place on the fictional "Hill Street", with "blues" referring to the blue uniforms police officers wear. The show was praised for it's critical themes and production innovations at the time. By the time the show ended in 1987, "Hill Street Blues" had received a huge cult following and some of the actors themselves had actually broken through!