Neither Chef Geoff's nor Founding Farmers have small plates, nor could they be called exotic.
One could, however, do a progressive dinner of small plates at a half-dozen Jose Andres places around Chinatown, and/or throw in some other small plates venues in the neighborhood like Rasika and Zengo.
Come to think of it, The Source's take on dim sum (on Saturdays) has one of the more exotic menus in town, and everything's served in tiny tastes.