'Magnum P.I.' Creator Glen A. Larson Dies At 77 From Cancer

11/15/2014 12:30 PM PST

'Magnum P.I.' Creator Dead -- Glen A. Larson Dies From Cancer at 77

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Glen A. Larson -- who created the hit shows "Magnum P.I.", "Knight Rider" and "Quincy M.E." -- has died from esophageal cancer at the age of 77.

The incredibly successful writer died Friday night at UCLA Medical Center ... according to his son James.

Larson was one of the most prolific producers of the '70s and '80s ... creating a string of iconic hit shows -- including "Battlestar Galactica," "The Fall Guy," "B.J. and the Bear," and "Buck Rogers in the 25th Century."

He also wrote the original "Six Million Dollar Man" pilot and TV movies.

In case you're wondering ... Quincy, Magnum, Rider and Fall Guy alone account for 513 hours of television -- as well as 21 combined seasons from 1976-88.

Safe to say this guy helped define an entire generation of TV watchers.