Row 34 right next to the Trillium brewery has a rotating selection of Maine Beer Co. on tap. It seems to be MO most of the time with Lunch and Another One mixed in. Their whole selection is worth a look if you are getting growlers or bottles at Trillium.
Mo at 34, Lunch (bottle) at Stoddards, and Weez near home (but also on tap at Stoddards. I'm on a MBC roll! Just when I thought I was done with the blacks, Weez is very very good.