The agency I found most interesting is Holland-Mark. Jake (the intern there) told me the agency used to be pretty big in New England (200 employees, $200 mil in billings) and actually went bust in the early 2000s when the economy slumped. Only about 18 months ago did Holland-Mark start up again (now has an office of 20) and its goal is to be the largest independent agency in New England.
Jake gave me a pack of Holland-Mark playing cards as a gift. I would have preferred an internship or job, but I did get an offer for a portfolio review!

I guess you can never have too many cards. The Holland-Mark website plays off these cards, and you can play solitaire or 52 card pick up (very cool):

Just from meeting Jake (the intern), Ben (the proofreader) and Caroline (the creative) from Holland-Mark, the agency seems like a cool place to work and a place that's going to grow.