Things to do in Baltimore and Boston?

[noisyturtle]

Flying out tomorrow to spend a couple weeks in Baltimore and Boston (for 4-5 days each, respectively)
Any suggestions or ideas on things to do or see while out there on the East Coast?

Restaurants, museums, cool things to see/interact with. I've a few things on the list, but would love to hear more. 

[captain]

I know a guy in Baltimore who will cuckold you with your wife. :-p
Boston: Get cannoli at Mike's.  Get out to Cape Cod for the best views. Martha's Vineyard is worth the trip.

[noisyturtle]

I'll probably try to get down to the North End for dinner one night.
There's this amazing Northern Italian place that serves the best duck I've ever had in my life, if the restaurants still there.

[Blaise170]

Boston is kind of boring if you don't like historical attractions. On the other hand, the Cape is quite nice and there are some pockets of stuff that a lot of people don't know about. I spend most of my free time cycling or hiking, there is a surprisingly large amount fo green space considering how clustered everything in the city is. If there is something in particular you like, you can ask me about it.