Coming from Belfast myself, I can tell what part of the town a person comes from by their accent. The ones from over the bridge (Co Down) side have a completely different accent than the ones from round the docks. Also the Malone Road, Hollywoood Road types do not sound the same as the Falls or Shankill ones, so they don't.

As far as the catholic/ Protestant thing goes I can tell whether a person is a prod or a taig from their accent and I will be correct about 90% of the time. It's something that you unknowingly develop and there is no explantation for it.

Peter Postlewaite who portrayed the father in "In The Name of the Father", had the accent down pat, right on the button. Daniel Day Lewis also did his homework as well. It's also something you don't lose. I have been away from Belfast for 41 years and people still cannot understand certain words, especially " eight" "owl" and some slanguage like " yourr mawns a bengal lancer" etc. I bet Kennedy knows what I am talking about. I do notice that when Belfast people get together the speech quickens and an outsider hasn't a hope in hell of understanding us. Even though it may not be as musical as some others, it's ours and I love it.