The anniversary hoopla surrounding Back To The Future seems to have unearthed every last scrap of ephemera surrounding the trilogy, from visions of a nightmarish Eric Stoltzian universe to everything that was taking up space in Bob Gale’s garage, but somehow it missed this: the full, never-before-seen promotional video for the Biff Tannen Museum And Casino that provided brief glimpses of alternate timeline exposition in Back To The Future II. got hold of the long-lost footage from a fan with family links to the production, and although it missed inclusion on the recent DVD and Blu-ray re-releases, it's now been Internetized for your viewing pleasure. Tangential, but fun nonetheless. [via Collider]