There is a small minimall by Porter Square called Porter Exchange that is the center of a little Japanese Community. Inside, they have a variety of different food stalls. We went there for a food field trip in my food anthropology class earlier in the semester. I was anxious to try it as I'd never bothered to make the trip. We decided to eat at Sapporo Ramen, which I'd heard some decent things about. As many of you know, I'm on an ongoing hunt for good ramen anywhere I can find it. Each stall in Porter Exchange is really really tiny, with room for just a few tables each. On weekend afternoons the place gets really packed. Luckily we were there pretty early and snagged a table right when they opened. 
pork gyoza - $4.25 
shoyu chashu ramen - $6.25 I was very disappointed by this place. The gyoza were alright - the skins were thin and pretty light, but the filling was a bit on the bland side (and there was too much of it considering the lack of flavor). I used more dip than I would usually. The ramen was absolutely forgettable. The noodles were alright, but I'd say only marginally better than good instant noodles. The roast pork was lean and fairly tasteless, and the broth had little flavor. Men-Tei isn't great but I think it's got Sapporo beat. Or maybe that trip to actual Sapporo has just ruined ramen for me everywhere else...