Heh, I see you didn't list anything beyond the first book. I think the Dune series is worth reading up to Children of Dune; the rest just go off into the deep end, with Chapterhouse: Dune being just straight up bad.
Some personal favorites of mine are:
The Things They Carried, by Tim O'Brien
All Quiet on the Western Front, by Erich Maria Remarque (translation by Arthur Wesley Wheen)
Shake Hands with the Devil: The Failure of Humanity in Rwanda, by LGen Roméo Dallaire
Hyperspace: A Scientific Odyssey Through Parallel Universes, Time Warps, and the Tenth Dimension, by Michio Kaku (a bit dated, but still damn mind blowing; perhaps subbing in one of Kaku's newer books would be better)
The Dark Tower series, by Stephen King