Shino's Sushi Express.

 Someone wrote:

 > I went there again yesterday. What can I say, the place is great.
 > For 7.50 you get a combo sushi plate, 6 pieces of sushi and 6 tuna
 > rolls. Also, there are plenty of $1 a piece sushi.
 > I'm amazed at their quality and price, and I'm more amazed that they
 > stay in business on Newbury street, no less, with such low prices.
 > In other words, if you can find parking, I highly recommend this
 > place.

 Indeed.  I can't say its the absolute best sushi I've had since coming to
 Boston, but its uniformly solid, cheap, and friendly.  If you can't get to
 Sakurabana or Ginza isn't you're scene, try out this no-frills but
 honest-to-goodness bargain in the middle of Boston's most expensive real
 estate.