I love Japan Creek! They have everything you could ever want for your Japanese cooking/eating needs.
First up I love their selection of bento and onigiris that you can pick up for a quick lunch to go. They also have sushi. They sell out by afternoon/evening ish though, so it's good to go in the morning.
In addition to your Japanese dry goods, they have fresh Japanese veggies and even uni. They have a great frozen section with noodles, fish, snacks and more. Their snack selection is fantastic, and you'll always leave happy :)
They have a point card for frequent customers (very Japanese) that I think you get $10 once you spend $100? Not 100 percent sure on that one.
Staff are very nice and I think all the ones I've seen are Japanese!