Tyler Thomas Taormina’s comedy drama about a Long Island family boasts some of the year’s sharpest characterizations and a strikingly original narrative form.

Not much happens plot-wise in “Christmas Eve in Miller’s Point,” the third theatrical feature from Tyler Taormina, but it has, as they say, a lot going on. In this ensemble comedy, centered on the Christmas gathering of a family so large that theaters ought to hand out a genealogy chart,