I love this thread, I'm a bookworm extraordinaire! I must disagree with quite a few posters here, I love all of the Middle Earth books, I read them all as a child and they really captured my imagination.
I read Mice and Men in secondary school; I must admit my English teacher was absolutely fantastic and really managed to get her class interested in a rather boring book; most of my class managed to pass her lessons with pretty high grades and I think it must have been down to her enthusiasm

The education system should take into account the age of the kids they're teaching to when they choose books for Literature classes, I reckon most kids couldn't care less about racism in the deep south of America in the last century, or some guy and his family who suffer because of his job loss.
Despite my teacher's enthusiasm, I hated Death of a Salesman. I yawned through every page and just hated the book. It didn't fire up my imagination and I had no empathy for the characters whatsoever, although I think being older might change my mind.
I haven't read the whole thread through yet, but one author who I love, yet struggle with at times is Steve Aylett. Slaughtermatic is a great book and it owes a real debt to Clockwork Orange, but I found myself getting lost in places.
...don't get me started about James Joyce *hatehatehate*