Sapporo for some real, honest-to-God Sapporo ramen.
Geneva for the chocolates at Stettler's.
Tokyo for the: huge pasta bowls at Capricciosa - lots of good memories there; anything for lunch at La Brasserie at the Imperial Hotel; sushi at Edogin. Mmm... sushi...
Any grocery store in the midwestern/southern USA that sells Blue Bell ice cream.
Washington DC for the Chicken Madness sandwich at Wisemiller's deli in Georgetown.