Karen: Last time around I said my Dad only watched the Warner Brothers cartoons with me and my brother. I soon realized I was wrong. My Dad, now 81 years old, has taken to Facebook, which is nice since we are separated by quite a distance. I had posted a picture of the Avengers from the film, and my Dad made a comment about "Where's the one that always said, 'It's clobberin' time!'?" I had to explain that the Thing was with the Fantastic Four -and then I realized, Dad had watched the old Hanna-Barbera Fantastic Four cartoons occasionally with us, and at least the Thing had made an impression upon him!
I was pretty young when these originally came on (1967) but I believe they were shown repeatedly in the late 60s. They were actually pretty good, with many stories lifted from the comics. The animation certainly wasn't as limited as the Grantray-Lawrence Marvel toons. Getting a Hanna-Barbera show was like hitting the big time for Marvel. I also thought the theme song was pretty catchy.