What book have you just not been able to finish?

For me, it was Atonement. I couldn't make it past the first 120-ish pages, because nothing seemed to happen. The author never gave the the readers enough actions, events or dialogues to really convince me what his characters were. Instead, he just dragged on the descriptions of what they did for pages and pages. Also, once I got to one of the good parts where something interesting happens, the chapter ends, and the story reverts to an earlier time from a different perspective, and takes another 20-30 pages to get back to the thing that just happened!

I saw the movie and liked it, but I could not stand reading the book.