Hong Kong - (my absolute favourite), Beijing, South Korea, Japan (only Tokyo), The States, The Netherlands (more times that I care to count), Germany (nowhere near enough of it), Belgium, Spain (I hate Spain - that was honestly the worst trip ever), and France (eh, it's alright). I did all of that within eighteen months, so not bad.
New York - as you'll be pleased to hear, is my favourite place in America. I try and make it over at least once a year for the Brooklyn vibes and the hazy beers. I'm not crazy about Manhattan - the Subways are disgustingly hot and humidity is just awful. Don't get me wrong, the Lower East Side is fun. But Brooklyn is better.
Next trip will be upstate though. All I've ever seen is the five boroughs.
Hong Kong I love so much that I'd actually live there, I'm hoping to do six months at some stage - then I might see about emigrating.
India is a pretty big one to tick off given my love for Indian music, and South East Asia is up there too.
Obviously, I'm bias towards London. I do think we have the best city in the world.
That's a shame about your stomach, what were you living on? Jelly Babies? Lol. The most severe thing I ever did was low carb. With enough dietary fat it actually works really well, but it's such a needy diet and very hard to get right. I did it for about a year, and then ate a cookie one day and ate nothing but carbs for about a month.