Yeah... this topic has been discussed before.
When I was growing up, we were allowed to watch 'I Dream of Jeannie', but not 'Bewitched'. My ex-wife was allowed to watch Bewitched.
It was not only the series's though, it was also movies.
BUT!!! I remember that we were allowed to watch The Wizard of Oz. I guess that was because it either had a 'born date' prior to the 60's when my mom began to study with the JWs, or else it was because my mom considered it 'harmless'. Personally, I think that it was because it had Judy garland in it who my mom liked.
Later, my JW-wife would allow watching 'Ghost' with Patrick Swayze, but not allow other movies in the house.
It's all a scam of whatever they make up at the moment.