In Kyojin japanese buffet, you can eat as much as you like from a big variety of sushi rolls (i would dare to say around 30 different sushi rolls with fish and seafood or for vegetarians, plus sasimi), a fresh seafood buffet and a nice accompanying asian buffet (mainly chinese, like sesame chicken, dumplings, sweet n sour and noodles) and you can order your own hibachi.
Add to all theses, ice cream and sweets at the end. The food is pretty good.
and all this, weekend nights for dinner for only 20$ ! Weekdays nights even cheaper (if i remember correctly around 15$).
Now this is not a fancy restaurant, if you are looking for one. But it is a traditional japanese buffet-diner, with japanese chefs behind the counter preparing sushi all the time and nice japanese decoration.