The Northern Wind school of sushi:

Proper sushi:

...shall contain absolutely no wasabi. Ever.
...shall contain no scallions. Not even on saba or hamachi.
...shall contain no ginger.
...shall contain no cucumber.
...shall contain no sesame seeds.
...shall never be dipped in soy sauce or any other sauce.
...shall be as fresh as possible.
...shall be made with sweet, vinegary rice with just a pinch of salt.
...exists to frame the flavor of the fish. Fishiness is good.