I gave up on Anna Karenina, and remember feeling really guilty for it! It's had so many great reviews on this forum that I found myself forcing myself to read on, in case I was missing something, but I just couldn't get into it. I've marked the page I stopped at, in case I decide to give it another go in the future.
However, I loved The Time Traveller's Wife, Life of Pi, Never Let Me Go and Captain Corelli's Mandolin, all of which have been mentioned in this thread, so it just shows that everyone's different!