Just finished reading that one about 10 minutes ago. It's fairly quick read, but definitely quite a work.
...and the novel "Brave New World". Both are pretty fun so far for entirely different reasons.
Apart from that I spent the past couple of months reading through the first four books of A Game of Thrones. The first three were a lot of fun, but the series fell off a bit in the fourth book. I've heard that the fifth book is even worse, but haven't picked it up yet.