Of the IMAX features I saw last year - this one really struck me as being an all round fascinating movie that not only had strong educational value - but also eye popping 3D photography. National Geographic Films is really stepping up to the plate in acquiring and releasing excellent (and interesting) IMAX films (i.e, "Jerusalem" and the new "Living in the Age of Airplanes")
Amazon pre-order:
Mysteries of the Unseen World (Blu-ray / DVD Combo)