New York City: The culture, the activity, the museums, the people, the food....count how many different languages you hear in one day, it's awesome. NYC is a great mix of so many different people that make it thier own. For Europe, I'm going to say Munich, I like the old world parts of the city and of course the Bier.
Asia, I'm still exploring. I've only been to Thailand and Korea, though next month starts the real traveling. I'll take Chang Mai over bangkok. I'm hoping to hit Beijing, shanghai, sydney, taipei and more in the next six months...i hear they are all awesome.