You honestly expect me to remember back that far?
Let's see, M*A*S*H went off the air when I was in college, and that was '83, so .... There were so many I liked, but they would die after one season -- I sometimes felt like a jinx, you know? If I loved a show, it was bound to die!
I'm going to have to say Stingray, just because it's one show that when it came out on DVD, I actually bought it. Of course, it's been sitting on my desk, waiting to be watched for ... not going to say how long.
I have to admit that the Stingray influence has pervaded a number of my books. I have a humorous romantic suspense series with another publisher that can be directly attributed to a Stingray fanzine story I wrote. The characters would not die, and they launched a whole story line.