In the days of E.R and NYPD Blue, it's hard to remember just how ground-breaking a show HSB was. Nothing like it had ever been seen before. The quality of the acting and writing, the documentary look and feel, the seedy broken down environment, the brutally frank situations and language (for the time), the fact that the "bad" guys got away with it as often as not, the huge ensemble cast, the long one-take scenes, the unhappy endings etc. etc.
Needless to say, the American people wanted nothing to do with such quality at first - until it won a record number of Emmys and they couldn't ignore it anymore. If nothing else, this series proved to the networks that quality can sell soap after all.
If you like your E.R. think a kind thought for Hill Street Blues - the series that made it all possible.
