Another reality based television series from Jack Webb (Dragnet, Emergency), Adam-12 was the first TV series to more realistically portray the joys & frustrations of being a police officer in the late 1960's-early 1970's. This attention to detail made the show a catalyst for uncounted numbers of people to enter law enforcement agencies when they became adults.
These are all of the greatest 1960's and 1970's detective, crime, police and procedural dramas; many of them, such as "The Rockford Files," also being quite comedic in their own right.