Look for new England Brewing beers in CT, GREAT stuff from them. In the Boston area check out julios liquours in westborough, that's a great place to shop.
In NYC lots of great places, but check out Rattle n Hum. Also, look at the beermenus site, lots of great info on what is on tap where, and where to buy stuff:
http://www.beermenus.com/
If you can head a little north of Manhatten, head up to Pleasantville and check out Captain Lawrence brewery, they make some great stuff you won't find elsewhere