I just got back from a dinner at Oga, on Rt 9 West in Natick.It was wonderful!!
I was with 3 non-chowhounds, so note taking would not have been cool. So I cannot recount the exact dishes.
However, some things were outstanding. The maguro in Meat Sauce was awesome, and the hamachi in sesame oil superb. There was toro available that was fresh and buttery.
Service was a bit slow, but the place was busy and we were in a closed off pseudo-tatami room. So the waiter could not see us unless he poked his head in, which was not often enough.
The dishes are creative and presented beautifully. Everything is very innovative and unique. Even the "normal" sushi dishes are a cut above. As the Globe said, it is the closest thing to Nobu in New England.
Not a place for non-sushi eaters. Although there are the standard cooked items on the menu, the emphasis is squarely on the use of raw fish. All the appetizer specials had some raw, or near raw fish in them.
Price for 4 was $155(before tip) with several sakes and a couple of cocktails. So it is not a cheap night out. But well worth it.