I love how you've been REALLY specific about some places (London, Paris) but others cover huge areas (Carribbean, South Pacific). Lol.
London isn't that great in my opinion. As far as UK cities go I much prefer the ones in the north and in Scotland (Glasgow, Edinburgh, Manchester, Liverpool, Newcastle). I think they have more character. It's so polluted in London and people can be pretty rude (although not as rude as the New Yorkers I encountered! No offence intended obviously ;)). But then I wasn't impressed with New York City either (I much prefer Toronto or San Francisco).
I would love to go to Hong Kong one day though. And if I lived in Napa I would drink wine every day. :)