I've been lurking here for a while getting some good ideas. I'm a transplant from the East Coast and now live in Alameda. I am also a sushi freak. I've tried most of the places people recommend in the Bay Area, Ebisu, etc, but have to be honest. The best place by far is Sakura in Alameda. Its a hole in the wall on Santa Clara Ave off Park street. They serve some really distinctive dishes. If you go, try the American Beauty and Bay Bridge. Order off the special menu and you really can't go wrong.