Fassbender gives a finely textured performance both in and out of the head.

Beneath those puppet-headed antics, and true to its title, Frank is improbably, disarmingly honest.

Michael Fassbender spends the majority of Lenny Abrahamson's irreverent comedy "Frank" buried underneath a giant plastic head, but the honesty of his performance is on full display.

Frank is bizarre, awkward, funny, beautiful, poignant, and it's that seamless blend of all those ingredients that make it worth recognizing.