This went around blogs and/or LJ a bit ago, a google thing were you typed this in and got a list and posted it. Now someone's gone and collected them all. Blogthings - You Know You're From...
As I fall into both MA and RI categories, I won't post anything myself, except to say they're very nearly 100% accurate. They forgot Victory Day/VJ Day for RI, though. I mean, who would give up a Monday holiday in August, no matter what it's called? Not RI, that's for sure!