Unfortunately, Japanese food in the US has been stereotyped as "Oh, you mean a Teriyaki Bowl."  Yet there is so much more, most of which isn't seen unless you go to a Japanese supermarket. 

Okonomiyaki- Sort of a lunch or dinner pancake.  Varieties include beef, shrimp, vegetables, etc.  Sadly, I've never seen a US restaurant serve this.
Sukiyaki- Almost like flat plate fondue.  Cooked beef, vegetables, mushrooms, clear sukiyaki noodles.  You can eat the stuff over rice or dip in raw egg with soy sauce- just make sure you have non-salmonella kind.
Mochi- A chewy rice cake wrapped in seaweed and dipped in soysauce.