I just returned from a trip to St. Louis and LOVED shopping at TJ's, and Target for that matter. Unfortunately in Canada, we don't have either of these stores. Target isn't THAT unique, but we don't really have a store that bridges the gap between Wal-Mart and a department store.
Based on the references to Trader Joe's across the Boards on this site, one can see how popular it is.
My question is, what stores exist in other cities/countries that you would love to have in your community?