I loved Pepperidge Farm Chantilly cookies, but they don't seem to make that anymore.
I love Girl Scout cookies, especially Thin Mints and Samoas. Oh, and Trader Joe's Lemon Crisp cookies. Though I wish they made a variety without the chocolate.
And, for some local (to me, I'm from Baltimore) cookies, I have to give a shout-out to both Berger cookies and Otterbein's.