* The Gone-Away World (Harkaway) [1]
* Ready Player One (Cline) [2] and
* The Martian (Weir) [3]
each of which is impossible to put down. Actually Harkaway's entire oevre is terrific. The steampunk Angelmaker [4] was a ton of fun.
Also, many of Iain M Banks' Culture novels (The Player of Games [5] is at the top of my personal list; they can be read in any order) and The Wind-up Girl (Bacigalupi) [6] are must-reads too.
This is not meant as criticism of the OP, rather as fodder for commenters referencing other longer and more contemporary lists.
Oh and a final, related tangent: if, like me, you really enjoy G.R.R. Martin but generally avoid straight-up fantasy [it seems to me the genre is awash in mediocre Tolkien rip-offs] please give The Name of the Wind (Rothfuss) [7] a chance. You'll be glad you did. :)
[1] http://smile.amazon.com/Gone-Away-World-Nick-Harkaway-ebook/...
[2] http://smile.amazon.com/Ready-Player-One-Ernest-Cline-ebook/...
[3] http://smile.amazon.com/Martian-Novel-Andy-Weir-ebook/dp/B00...
[4] http://smile.amazon.com/Angelmaker-Nick-Harkaway-ebook/dp/B0...
[5] http://smile.amazon.com/Player-Games-Culture-Novel-Book-eboo...
[6] http://smile.amazon.com/Windup-Girl-Paolo-Bacigalupi-ebook/d...
[7] http://smile.amazon.com/Name-Wind-Kingkiller-Chronicle-Day-e...