I've been watching Kojak, still gritty and realistic, doesn't seem to have dated much at all, quality. One of the aspects to it I've noticed this time, is that Kojak is not invincible, and the villains aren't always wholly villainous, there are shadings and it rings true for it. Great acting all around. Who loves you baby.
So far, at the end of Season 1 and soon beginning the Season 2 dvds.
Have also got through an entire Season of Streets of San Francisco, which reminds you at the beginning that "THIS IS A QUINN MARTIN PRODUCTION...." and is divided up with superimposed Act divisions on screen, five acts, or 4 and an epilogue.
Also watched a few episodes of SECRET ARMY, this is a Brit series, from the same period, but it's full of brilliant writing and tension, overshadowed by ALLO ALLO, the parody -based TV series that has been remembered for its punchlines in the UK. And was repeated for year on year.