Your Sister’s Sister (2011)

Duplass' feisty energy is matched by DeWitt's constant smarminess, while Blunt's shy, fragile behavior balances off the forceful personalities surrounding her.

Each an actor of distinctive delicacy, Duplass, DeWitt, and Blunt do some of their subtlest, most sweetly calibrated work ever, playing off one another with the kind of ease and trust that is, in itself, a demonstration of love.

After putting male insecurity under a comic microscope in "Humpday," writer-director Lynn Shelton hands the fairer sex a more prominent role in Your Sister's Sister, another winning study of relational boundaries crossed and sexual dares gone awry.

A captivating examination of criss-crossing relationships permeated by incisive performances.

Nothing about the movie is showy, except for Shelton's palpable love of good people making a mess of things. Barring some late-inning coyness, it's some of the truest, dinged-heart couples' circling of the year.