I too watched Kotter after it was off air but never saw all the episodes. Only last year did I catch up on the Get Smart series with Don Adams. I tried to do the same with Bewitched and I Love Jeannie, but lost interest. Some shows just didn’t age well.
Maybe I should revisit Batman with Adam West, Gilligan’s Island and Star Trek, as there are several episodes I haven’t seen. Fun to dabble into some of these epic shows from long ago.
Although I suspect
@OldCraig71 might be an authority on all of the above. Surprised he hasn’t chimed in yet to find out how popular he’s become once again.