Moira Sushi is fantastic! I used to live across the street when I was in college and a group of us would go for happy hour on a weekly basis. The sushi is affordable and the sake is delicious. They give you smaller cups for the beer, so you can actually enjoy multiple sake bombs with one order.
If you go make sure to order the Dragon roll. It's not on the happy hour menu, but it's delicious. And the dragon breathes fire! ;)