first off, UvaGirl and GD, i hate you both for all the places you have been
Anyhow, heres my list....in no order
Paris - the sense of history and architecture, and one of the most confusing yet somewhat efficient public transportation systems
Napa Valley - I love the wineries and vineyards of the area, as well as the architecture that the land allows, simply beautiful
Monterrey - Mostly the bay area and cannery row, but it is small ans quaint, with some beautiful Beaches and highways nearby
thats about it, i havent travelled extensively yet, but NY, Italy, and Australia are next!