Oh man, I may have to expand my documentary shelf soon. Since I don't normally get a chance to do this, I'm going to take a minute to brag about all of the BBC Earth documentaries I have:
Blue Planet, Planet Earth, Nature's Most Amazing Events, Life, Frozen Planet, David Attenborough's Wildlife Specials, Life of Mammals, Life in Cold Blood, Charles Darwin and the Tree of Life, David Attenborough's Life Stories, the Great Rift, Africa, Galapagos, Yellowstone, Wild Pacific, Madagascar, Wild China, and the Hunt.
It doesn't count, but I should really mention Attenborough's autobiography Life on Air. It's one of my favorite reads.