Been waiting for this japanese snack shop chain for a while. It's finally open. Rows upon colourful rows of preserved/pickled sweet fruits, all kinds of crackers and baked sweets, dried fruits, even fried baby crabs.
Haven't tried anything yet...paralyzed by indecision due to the sheer amount of stuff. Will be going back when I'm in a more incisive frame of mind. But if past experience with some of this stuff in SF is any indication, it's likely to be worth the trip to Chinatown (located next to Eldos Bakery on Harrison).