Probably Ramen, Onigiri, and Sushi. Unfortunately I haven't tried the real deal, but I am possibly going to Japan for a month over the Summer,
so I'll try the real deal then :D.
I love sushi and gyoza
Sushi (sashimi,nigiri,cooked tempura,etc), yakisoba, BBQ hotpots, and steam buns/dumplings!
Ramen, real Ramen. Not big into Sushi and theres no good place around me for much else. Japanese Fried Rice aswell.
Sashimi.... tell the chef I have no preference and to use his/her imagination