There is a small show on teawares in one of the Asian arts galleries at the moment. Some really nice pieces of ceramic, iron, wood, lacquer, bamboo, and so on. From old to contemporary. I think it will still be up when you are there. Mostly new works I haven't seen before.
The MFA has one of the best collections of Japanese arts in the USA. I have a good friend whose grandfather was responsible for the museum's Japanese collection just prior to WWII. She sometimes loans me pieces retained by the family that did not go to the museum collection for teaching purposes. Some fantastic pieces and books.
Unfortunately...... the MFA keeps 99 percent of it all locked up in the archives. In fact, I was in Tokyo back in May 2012 and the featured show at the Tokyo National Museum in Ueno Koen was ........ from the collection of the MFA in Boston! The place was PACKED with Japanese nationals looking at the show.... which was FANTASTIC! And absolutely HUGE in scope........gallery after gallery packed with things. Probably could have filled the entire main MFA space in Boston. Stuff I've NEVER seen out displayed at the actual MFA. It is absurd that I have to travel 1/2 way around the world to see this stuff. (It was pure chance that I saw it.) Sorry..... can't post photos from inside... it was a "no photos" exhibition.
There is some different stuff out in Boston.... but not huge amounts. Haven't seen a Hamada Shoji piece displayed in years.