If you are looking for traditional (non-Americanized) Japanese food besides just sushi, or the best sushi in the area, this is the place to go. Hidden away in the Woodcroft shopping center on 751/Hope Valley Road (just across I-40 from Southpoint) in Durham, Yamazushi has been around for about 18 years. It has a very Japanese atmosphere with traditional decor and music playing lightly in the background. It even has two areas set aside for traditional Japanese dining (i.e. you sit on the floor, etc), though the majority of the seating is at booths and tables. The atmosphere is very sedate, as is the service (though pleasantly so), so don't go there if you are in a rush.
The menu displays a very wide range of traditional appetizers (we got an extended menu because my girlfriend is Japanese and can read/speak the language, but they probably have a version for us anglos as well...she said that a lot of the foods listed there are things that a normal Japanese person would make at home). The main menu is a bit more limited but ranges from sushi to grilled fish and chicken and includes some fairly standard meals for folks unwilling to face the more traditional fare. They have some shared dinners, one of which is a traditional Japanese fondue that I want to try the next time I go. All of the shared dinners require a 24 hour reservation for them to prepare the meal for you. All of the meals have excellent mid-range prices.
They also serve a decent range of beers, wines, and saki.
And for the record, my girlfriend was thrilled with the place because she had been looking for a "real" Japanese restaurant since she'd been here.