How come non of their careers ever popped?

Maybe they were on the show too long and were type-cast?

This show was their careers popping.

Can't forget about Courtney Thorne-Smith. She did pretty well in future tv productions.

good question, same thing happened to the 90210 cast. none of them did anything of relevance.

Arguably Kristin Davis has had the most lucrative career since. She was in Melrose Just two of the seven seasons.

I'm rewatching it right now. Haven't seen it in reruns so this is the first time since the early 90s. I'm surprised by the extremely poor acting of Andrew Shue and Grant Show. Was this their first acting jobs ever? They were TERRIBLE. So, I can understand how Andrew Shue never had any sustainable career. Grant is on Dynasty and he's a bit better, but still he's no great shakes.