2001 is worth a re-visit I think. I saw a photo of the model model languishing in a field near the studio. I believe it was 11 foot across. Only when you try to re-create this with polygons and textures do you appreciate the skill that went into making that model back then. Awesome.
This little horrible animation below, most probably shouldn't be here apart from the fact that its so old and was developed on a crazily slow mac with 96Mb of ram and 1Gb disk drive. Enjoy or have a laugh :)