My parents love to watch Quincy on Netflix. I find him very, very irritating but they love the show.
Magnum PI was one of the worst TV shows I've ever seen. That can stay dead. Should have been given a quick bullet after the premiere episode.
BLASPHEMY! How dare you speak ill of Magnum! I mean, he had a Ferrari, a .45, a helicopter, and...a killer mustache!

Man, I loved that show when I was growing up. Now, it seems a bit cheesy, but not terrible. The whole thing toward the end with Higgins and Robin Masters was silly.
I have been going back on Hulu and re-watching one of my other favorite childhood shows, Miami Vice. It's still pretty good, if you can get past the fashions.

Season 1 is weak, but 2 and 3 are pretty good.
Here's a couple of others:
Highlander (Just accept it as an alternate world from the movie, and it's ok)
Jack of All Trades (You can never have enough Bruce Campbell)
Cop Rock!
Manimal
(OK, just kidding on those last two)