The show was a bit more special in its initial incarnation -- in part because it was life, and you really didn't know what would happen -- but also TV was newer, so there was more a sense of occasion, I think. But the sequel had its moments, particularly depending on the guest.
This is a very enjoyable and affectionate episode that features Dick Van Dyke. As you can see below, it included Rose-Marie and Morey Amersterdam, of course, and some other fun surprises (that even gets Dick performing a bit). Mary Tyler Moore was unfortunately appearing on Broadway at the time, in the play, Whose Life Is It Anyway?, but she nonetheless makes a lovely appearance live-by-video.