At the risk of sounding completely ignorant (since everyone outside of Boston thinks this way, right? :D) - are these things truly native Boston foods? Are they worth trying and where is the best place find them:
Boston Cream Pie
Boston Baked Beans
New England Clam Chowder
Anything I should try while I'm there that I wouldn't get (proper quality) anywhere else? Aside from fresh seafood, of course. I'm looking forward to oysters galore!