OM NOM NOM NOM.
Cook rice and spread it onto a large sheet of seaweed.
For teriyaki sauce, all you need is:
The amount of each depends on you (some people like their teriyaki sweeter, others saltier).
Mix 'em both in a bowl, then pour it into a pan to caramelize. When it gets to a syrupy consistency, throw in your slices of Spam.
Place Spam on top of seaweed & rice, cut 'em up, and you're done! :]