Unfortunately the documentary itself was not released, rather "Behind the Scenes With King Kong In Special Effects," a half-hour NOVA special about the making of the King Kong segment that opened the show. Being a huge Kong fan we of course bought it anyway; it's very interesting, but I still wish they would have released the actual documentary.
Also, am I the only one who thinks, other than the laser blast special effects, the original sequence is better than the IMAX version?