Only American 80's cafe I can remember was the one in which Frasier first appeared in, before getting his own sitcom. I cant remember the name damnit. As far as brittish tv goes, I think Man about the house had a cafe where they'd all hang out regularly.
I used to watch tv, alot. I was like a walking tv guide. My friends would be like, hey what's on tonight? Whats it about? I could tell them everything in detail. Same goes for movies.