We recently got a flagship type place by Berklee called Pavement, and I've gotten to try coffees from some amazing roasters there, including Ecco and Ritual. There are a few local roasters too that have been doing some great coffees like Barismo, George Howell, and Flatblack. In Somerville, Bloc 11 and Diesel do great stuff with Intelligentsia, although Diesel has been getting pretty ratty lately. All in all, and unlike almost everything else here, Boston's coffee scene is growing nicely into something quite praiseworthy. Edit: I forgot to plug Simon's, which, although I don't find myself in that area very often anymore, I consider the best or at least most consistent in the area.