I'm going to slow the hype train on Trader Joe's for a bit. The produce, seafood, and the meats are pretty gross compared to what you find at Metcalfe's or Whole Foods. (Not to be a wet blanket, but frozen "organic" chicken breasts preserved in some "special" preservative doesn't inspire confidence.)
Trader Joe's is best for stuff like nuts and raisins. People I know have also recommend fruit juices, which I don't drink because I'm trying to limit sugar, and also liquor, but I don't drink so I can't speak to that.
Layout of the store is great with plentiful underground parking!