alaskamatt17 said:
Ender's Game by Orson Scott Card
The Lord of the Rings by J.R.R. Tolkien
Jurassic Park by Michael Chrichton
The Thief of Always by Clive Barker
The Talisman by Stephen King and Peter Straub
End of an Era by Robert J. Sawyer
Those are all great books, though I suspect most of you will see that I lean heavily toward SF and fantasy (I fit in an even amount of each). If you aren't particularly keen on these genres, I'd recommend Ender's Game anyway--it's really that good. I had a high school English teacher who vehemently denied that anything of real literary value could come out of these two genres ... until he read Ender's Game. Good ol' Orson Scott Card shut him right up.
Funny how different people react to a book. I read
Ender's Game a couple of years ago, borrowing it from one of my bosses. I absolutely could not stand it! I can't put a finger on it, but for whatever reason, I wanted to wing the book across the room. I finished it, but it was a struggle. I saw a few reviews of it that said maybe it was a book more in tune with 20 somethings.
I have my doubts about that, and I obviously don't know (and don't want to know) your age, Alaska Matt. But I just found it weird that a lot of the positive reviews I've seen were all from people who said they were in high school or were in their 20's. I don't know why that is, and I'm just throwing it out there for the hell of it.
To get back on topic...my faves? Hard to say, but here are a few:
The Lord of the Rings, J. R. R. Tolkien
The Hobbit, J. R. R. Tolkien
I, Robot, Isaac Asimov
The Fifth Ring, Mitchell Graham (esp. the 1st book of that trilogy)
Pride and Prejudice, Jane Austen
Winter's Orphans, Elaine Corvidae
Heavily fantasy oriented, but that's typical for me.

There's only one classic in my list, because I can't really think of any that I've enjoyed reading more than once except for
Pride and Prejudice.
~Nancy