Poll: Best Detective Series of the 70s

Forensic science has changed the job of police detectives dramatically over the last 50 years. DNA phenotyping, high-tech crime scene analysis, CODIS (FBI's database of prior felons, missing persons and arrestees) and computerized forensic profiling were not available or not as advanced as today. Fifty years ago, solving crimes was mostly based on old-fashioned police scrutiny. Which is your favorite detective series from the 1970s? Discuss the list here