Where can one get a good corned beef sandwich in the Boston area?
Get on Rt. 95 south. Keep going until you get to...oh, say Queens in NYC. Ought to be able to find one there ;-)
Seriously though, where to get good corned beef or pastrami in the Boston area has been a vexing subject for some time, AFAIK. Be interesting to see what responses you get!
How about Reuben's on Harvard Street in Brookline.
Strictly kosher, big thick sandwiches. No dairy.