In no particular order:
+ The Kitchen Boy by Robert Alexander I think that's who it's by, anyway. This mostly just has to do with my semi-creepy obsession with the Romanovs.
+ His Dark Materials Trilogy by Phillip Pullman. They're making The Golden Compass into a movie, but I'm refusing to see it. I always hate movies of books I liked.
+ Monkeewrench by P.J. Tracy. It's very compelling, is also a series now.
+ Harry Potter by J.K. Rowling. Need I go on?
+ The Bluest Eye by Toni Morrison. rikoren is probably sick of hearing about this one by now >.>
+ Pet Sematary by Stephen King. Because a book that can actually make a haunted piece of land that brings people back from the dead seem plausible deserves recognition.
+ The Ruins Don't remember who it's by anymore, but it was scary in a depressing/tragic way. ( I liked it, but I don't want to read it again. )
+ Lord of the Flies I should really know who this one's by, being an English mayjor, but I'm blanking out on his name. Oh well. It's a good book; I really, really liked Simon.
+ The Stranger by Albert Camus. I also really liked Mersault, albeit not as much as I liked Simon.
+ Nine Princes in Amber ( and the following Amber novels ) by Roger(?) Zelazny. The first series was great; the second kinda sucked D: I was sad.
+ The Saga of Pliocine(sp?) Exile by Julian May. I like these every time I read them, but somehow I've never managed to actually finish the series. I wanna know what happens, dammit!
+ The Girl who Loved Tom Gordon by Stephen King. Oddly enough, it's actually a fairly hopeful book.
+ Of course, pretty much anything by Terry Pratchett. I think my favorite might be Going Postal, or maybe Night Watch.
+ The Magician's Nephew by C.S. Lewis. I'm fairly indifferent to the rest of the series, to be perfecctly honest, but for some reason this one has a special place in my heart. ( I like the general tone of it, I guess. )
+ The House of the Scorpion(?) Not even entirely sure on the title anymore, but it was very interesting.
+ Fear of the Dark Only of any interest whatsoever if you're a fan of Doctor Who. It's the only thing I've ever seen that's connected to DW that featured a monster that is actually, genuinely scary.
There's probably a lot more, but that's all I can remember for now.