Space Odyssey the Making of a Masterpiece - Michael Benson
This is the ultimate "DVD Extra" of a book. Every single detail of the genesis and revelation of 2001 is documented in painstaking detail. The author has exclusive access to original manuscripts, and has conducted dozens of interviews with everyone from Arthur C Clarke to - literally the on-set tea boy.
Full of odd little anecdotes - some barely more fleshed out than an IMDb trivia entry - including some absolute gems of stories in there. A complete guide to how the film twisted and turned in its creation. I'd go so far as to call it a pure biography of a cultural artefact.
At times it feels like each chapter is written by a different author. There are meandering asides, and spurious footnotes - but it is all rather jolly.
It is long - but what else would you expect? A great book for anyone who loves the film.