Non-fiction
A History of India, by John Keay (2008)
Doctor Who: The Writer’s Tale, by Russell T Davies and Benjamin Cook (2009)
The Essence of Christianity, by Ludwig Feuerbach (2014)
The Journals of Lewis and Clark, 1804-1806 (2014)

Non-genre
Henderson the Rain King, by Saul Bellow (2006)
Billionaire Boy, by David Walliams (2014)

Poetry
The Divine Comedy, by Dante Alighieri (2009)

SF
The Restaurant at the End of the Universe, by Douglas Adams (2006)
The Female Man, by Joanna Russ (2007)

Doctor Who
Doctor Who: Aliens and Enemies, by Justin Richards (2011)

Comics
The Countdown Annual 1972 (2012)

Not many today.

The best
The Female Man is justly famous. (Review; get it here)

Honorable mentions
The Writer’s Tale is a brilliant insight into how Russell T. Davies approached his writing of Doctor Who. (Review; get it here)
We’re a little distant from The Divine Comedy, but it retains its power. (Review; get it here)

The one you haven’t heard of
The Countdown Annual 1972 is a charming snapshot of an earlier age. (Review; get it here)

The ones to avoid
I could not finish (review) either The Essence of Christianity (get it here) or The Journals of Lewis and Clark (get them here).
But even worse is David Walliams’ repulsive Billionaire Boy. (Review; get it here)