Exclusive to the Blu - ray is a thorough and detailed commentary track by director / writer Richard Kelly, the featurette «The Box: Grounded in Reality» (about the real - life history
of his parents that inspired the characters), three brief yet quite efficient snapshots
of the
film's digital effects, a trio
of bonus mood
piece shorts (more
ominous suggestions
of otherworldly surveillance) and a bonus digital copy
of the
film for portable media players.