On a league of its own, really - Feelings from Envy the band cristallized in a movie. Despair, angst, bursts of violence dominating the ephemeral sparks of hope & pacification. Remains unscathed the mystery of the creature and the possession (has it really occurred, when, why?)
I really think that one about The Hall of Egress is underrated, it definitely brushes on a much heavier (and arguably darker) theme and shows how AT is not just the whimsical cartoon it appears to be.