Where to get good Japanese food in Tennessee?

Question:

So, I love REAL Japanese food (and culture, I'm learning the language).
I don't like California rolls, or any of the kind of Americanized stuff. I like sashimi and nigiri (salmon and tuna are my favorites), eel, steamed rice, a good pot of nabe, cold noodles, raw tofu with soy sauce, ect. But where can I get really GREAT authentic food in Tennessee?

Answer:

What city ? Go to the web site below and type in the city you want and then Japanese restaurants.
The way to tell if a place is good or not ? If it's mostly non-Asians eating there then you know it's not any good.
Most places here are "Americanized " though.