Here's the great review for the Special Edition Blu-ray by
Collider: My favorite feature on the Blu-Ray special edition is the six-part, 90 minute long
MAKING-OF-DOCUMENTARIES. This was the first time I saw how every important scene was positioned together. Another awesome feature about the documentaries is that they can be played alone or in picture-in-picture mode alongside the film starting from "Love Death Birth", "The Wedding", ...