Magnum PI (original)
Also on the list
Spencer for Hire
LA Law
St. Elsewhere
Night Court
Hart & Hart
Remember watching Spencer a few times back in the day, and it was ok.. St Elsewhere i never watched, but was by all accounts a really quality show for theat era, though the series finale was a huge letdown of epic proportions that people still talk about in terms of how NOT to end a series.. i wont spoil it here.
Hart to Hart to me is a lot like Magnum; it didnt touch the cultural zeitgeist like Selleck and co did, but it was a lot of fluff but with cool 80s cars , fancy stuff , a cool dog and razor thin plot lines .. Night Court was freaking hilarious and IMO one of the most underrated comedies of all time.
LA Law to me is very similar to Moonlighting - a Top 5 of All Time tv show that is hard to find these days, but had stellar writing and acting, and i looked forward to watching it every week back then, just like with Moonlighting.