This is the place to go for authentic Japanese; they even have a special Japanese-specific menu that's not normally given out that has a ton of good stuff on it.
I've been here 3 or 4 times in the past month with my wife and the food is always excellent, and the staff always friendly. Prices are reasonable.
If you're looking for super-Americanized sushi they can make it but you'll be better off at Ra/Kona Grill or somewhere where the club music is blasting at eight million db.