I recently retired but a treat waking up early for the past 10 years was watching Barnaby Jones at 4 am either a work day or if I could not sleep. I remember the show as a child but it would have been over my head for my age. Its a brilliant show. The writing is excellent. The acting is superb. And I love the 1970s big cars and 70s themed plots.
It was the days when the bad guys wore suits :)