Sakura is pretty good.

Another few from the SF Bay Area:
Tani's Kitchen- The proverbial "hole in the wall" restaurant. 80% of the staff are Japanese. (the 20% is the dishwasher) I might as well add that about 70-8Excellent Udon and Tempura. Nigiri is Mediorce, but the Sashimi is excellent on Thurs, Fri, Sat. By Sunday and Monday, the fish gets a little old. 80% of the customers are Japanese. You won't find junk like "California Rolls" here! They'll probably kick you out, laughing!! Good for a cheap eats. Closed on Wed. My experience less than 10 USD lunch, less than 20 dinner.

Sanraku-
Excellent Sashimi and Nigiri. They normally have quite a few items that you usually won't find anywhere else, so be adventurous. *hint* request "real" wasabi, they give it out on occasion. It's actually quite good Japanese food. However, don't go to the Meteron location. The Sutter Street location is the best. Prepare for a wait. Again most, if not all the staff are Japanese. (experience usually 120 USD for two, but I can do more! The food is THAT good)

Tomodochi- (Hayward) Excellent selection. Although the owners are of mixed ethinicity and the staff is also, the food is EXCELLENT. I usually go for quite a bit of the Sushi and sometimes the grill. Their Beef Tataki is excellent
(experience 50-70USD per person)

Bangkok, Thailand-
There is a very good Japanese Restaurant directly across from the Davis hotel in Bangkok. I can't remember the name, but go for their "local fish" sashimi and Beef Tataki, and thier Soba. Both are excellent. About 1000 baht for 2.