I just posted a response on the Manhattan page that should be posted here, too.
Marlow and Sons in Williamsburg has an oyster special on weekdays before 7 that shouldn't be missed. $1.25 oysters (Maine and Massachusetts) are very fresh and very delicious.
And, if you haven't eaten dinner there, you shouldn't miss that either. Chopped duck salad, white bean spread, brick chicken, fish stew, among many others are standouts. Williamsburg is very lucky for this one.