Paris
Rome
Sydney
London
Athens
Madrid
NYC
Hong Kong
Rio
Not going to Dubai for any reason.
Why ? From a tourist perspective it is very nice.
I am actually hoping to move there in a few years. You can bank some serious $$$ if you work for a company there. Virtually no taxes, housing allowance, car allowance, etc. and very westernized.
As for the list :
Rome - Have always wanted to visit since I started taking Latin in 9th grade
Dubai - Lots to see and do. Nice beaches, good restaurants, good clubs, good customer service everywhere.
Paris - Surprisingly awesome architecture, good food (have been twice for work)
London - been a ton for work .. no real desire to go again (although I will later in the year)
Sydney - Been a few times for work ... not really that special to me
No desire to visit the rest
Cities I would visit (on my own dime) and are not on the list:
Santiago - been once for work ... beautiful, great people, great food
Stockholm - been several times for work ... would move here permanently if I could afford it
Helsinki - been a few times for work ... just overall nice
St Petersburg - been few times for work ... beautiful city, beautiful women... poor customer service
Vienna - been a few times for work...great people, food...beautiful scenery
Zurich - been a few times for work...great people, food...beautiful scenery
Anchorage - went last year with my daughter ... just awesome place to base a trip
Prague - been a few times for work ... great people, great food, dollar goes a long way
Budapest - been a few times for work ... good food, beautifully laid out
Berlin - been a few times for work ... great food, friendly people, easy to get around