Baltimore - sea level to 480 feet
Philadelphia - sea level to 446 feet
Washington, DC - sea level to 409 feet
So every major east coast city has more elevation change than Boston.
There's lots of hills that force you to climb 100'-200' but they also get bigger surrounding the city. Great Blue Hill in Quincy is 635'. Keep in mind that Boston has the least square miles of the cities mentioned, and the hills continue to get larger outside of city limits. The google terrain map shows it well (switch this to terrain if it's not automatically there).
I don't want to flood this thread with any more pictures than I already have, but each of these links shows the skyline from a different hill in and around the city, and it's far from comprehensive.
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