A new cantonese restaurant has opened in downtown Somerville, and they have dim sum! Husband went yesterday and reported back that the dim sum was good (while not as good as Hong Kong, still, good enough so that we won't have to drive to Edison, NYC, etc.) and worth going back in the very near future. I'm hoping to personally try it some time in the next week or so (maybe for dinner).
For reference, for 2 people who ordered 8 items (har gow, lotus leaf wrapped sticky rice, beef ribs, etc.), the cost for their dim sum lunch was about $25.
Address of the restaurant is 216 Main St.