I can't really think of anywhere I would want to live that I'm not at now. Certainly someplace warmer than western Pennsylvania. Although Lublin, Poland is a lovely place. They have some really cozy clubs and bars.
As for visiting I've always wanted to go to Paris,St. Petersburg,Moscow,Lake Baikal(its seems like one of the most beautiful and untouched places in the world),New York,Chicago,Japan,Kenya,Florence,San Francisco,Texas,South Africa( especially the KwaZulu-Natal)and really any great city that has a museum with a fine collection of art.