This weekend, the Decades channel is running a marathon. Starting at Noon (Eastern time), they're running 42 episodes of the 1974-1975 detective series, Harry O starring David Janssen. That's the entire series minus the two TV Movie pilots that preceded its two year run. Consult your guide to see when it starts on your TV. (Here's the entire schedule.)
I thought the show was very good in its first season and even better in its second. The first thirteen were shot in San Diego and in them, Private Eye Harry Orwell often clashed with Police Lieutenant Manny Quinlan, played by Henry Darrow. With Show #14, they relocated to Los Angeles where Orwell often clashed with Police Lieutenant K.C. Trench, played by Anthony Zerbe. I can't think of two characters in television who had a more delightful adversarial relationship than Orwell and Trench.
I won't be watching since I have all the episodes on DVD. But if you don't, here's a good opportunity to set your DVR, grab a few and sample them. I would recommend Episode #20 ("Lester"), Episode #21 ("Elegy for a Cop"), Episode #23 ("Anatomy of a Frame") and Episode #36 ("Mister Five and Dime"). But most of 'em are real good.
Or if your D.V.R. has enough space, maybe you can record all 42 and just start watching with the first show. As with all TV detective shows, many of the episodes involve some friend of the hero and the friend has either been killed, framed or kidnapped. But even when they did one of those stories, they always put a neat twist on the proceedings.