Gravity's Rainbow. Ugh. I.... really want to finish it, but every time I pick it up I find myself putting it down again. It's chaotic, infuriating style and countless characters of whom I'm not sure are important, have ensured that I'll probably never finish it.
Also, I got a book called "The Battle for Spain" by Antony Beevor. Now, I love Beevor's other books, but "The Battle for Spain" is just a slog. So many major players have very similar names - it's almost as bad as my book on Chinese History that I could never finish because it seemed like every second major figure in Chinese history was called Zhang of Xhu or Bao (before you start, I'm half Chinese myself, and I love Chinese history but GOD do they need more different names. Its INFURIATINGLY difficult to keep track of who is who when there are so many Lins and Chans). The Battle for Spain is even worse - not only are there so many Luis and Manuels but there are SO MANY different groups on the Nationalist or Republican sides that have VERY similar names. It's a chore to juggle who belongs to what faction and what they stand for - I mean, there's the UGT, the UR, the IR, the PCE, the POUM, the JSU, the PRR, the LCT, the DLR, the PSOE, the CEDA, the JAP, the LC and the PNV and even groups on the same SIDE hate each other and have youth groups and splinter factions and god it's a MESS. The US civil war was FAR easier to get through (you should read "The Civil War: A History" by Harry Hansen. It's well written). Even the Russian Civil War was easier to comprehend than the Spanish Civil War and that had almost as many groups.
One day I'll get through "The Battle for Spain". I'm sure of it. But I don't think I'll managed to finish my History of China book. That's the sad thing about the History of China - so much of it just can't be trusted, and the historians themselves admit it, because so many histories were burnt, over-written or modified to reflect the wishes of whoever ruled at the current time. There are huge segments of Chinese history which are blatantly just propaganda. Modern Chinese history (1800's-Present) is far easier to follow and worth reading up on. It's the ancient history, which as fascinating as it is, is virtually impenetrable. Which is a damn shame.