It's possibly a toss-up between Ask Aspel and Blue Peter when the first (UK at least) mention of Revenge Of The Jedi was made.
I have a very vivid memory not only of the show in general but this one in particular (even though I was only 10 years old).
It was one of the reasons why I was vocal about suggesting the title be restored last week was remembering three very formative years where the title was one of the few things I knew about the next episode after such a cliff hanger.
Most viewers won't remember the feeling of watching ESB and having to wait three years to find out what happened next or just how important it could be to someone of that age.