I like lots of books. I generally prefer doorstoppers - I want there to be room for characterization and world-building, so that when I put away the book I am still convinced the world described within exists, to a certain degree. Favorites include:
-The Wheel of Time, by Robert Jordan (finished by Brandon Sanderson)
-A Song of Ice and Fire, by George R. R. Martin
-The Dark Tower, by Stephen King
-Harry Potter, by J. K. Rowling
-The Bas-Lag Cycle, by China Miéville (Perdido Street Station, The Scar and Iron Council)
-Mistborn, by Brandon Sanderson
There are many more, of course. I am currently reading Malazan Book of the Fallen (currently at book nine, Dust of Dreams), by Steven Erikson. Very melodramatic; the anthropologist-cum-author really likes to deep into stuff like the human condition and theology and what-have-you. I don't get most of it, and the poetry is nonsensical to a brute like me, but I very much enjoy the fresh perspective he brings. The history of the world spans millions of years (although the most significant events only started about 320 000 years prior to the series), with time being a recurring motif. And stuff.
There's a lot of reflecting on how the landscape has changed over the millennia, and idle observation of interesting features. Despite the series not actually having a very tangible plot, preferring instead to explore the ramifications of the events unfolding with most viewpoint characters merely being powerless spectators, it manages to feel very interesting and novel.
I strongly suggest reading it, if you can stand the constant angst; Steven Erikson's strengths arguably do not include writing (although he is a master at writing emotional moments), but the series is fascinating, and very intelligent - reading the first book, Gardens of the Moon, is like being dropped into the middle of an ongoing doorstopper series, and over the course of the cycle little exposition is given, leaving the reader to puzzle out just what the heck is going on. Just don't give up when you reach Midnight Tides, the fifth book; the complete change of setting and storyline is jarring, but the book is arguably the best in the series (actually, the second book, Deadhouse Gates, which really ought to be called Chain of Dogs, is the best) and provides a lot of world-building.
Anyhow, just sayin'. Malazan.
There are a number of other books I'm very fond of, but I think I'll leave stand-alone titles for a different post to avoid making this one too long.
AlKim: I'd also like to recommend
Roadside Picnic by Andrej and Boris Strugatsky.
A classic of Western literature,
Lord of the Flies by William Golding.
Alright, a short comment on these two. I've been looking for the former, but haven't been able to find it yet. I'll look harder; I've seen it recommended a lot (especially in the Swedish version of PC Gamer).
Not really a fan of Lord of the Flies, myself. Gripping read, but I don't agree with the underlying philosophies (I believe that people are, well,
people) and as such the holes in the plot were just too much for me to really be able to recommend it.
Oh, yeah. Planescape: Torment. Modern literary classic in game format.