I like books like, uh, Count of Monte Cristo. There's only one of those, though, and even all of Dumas' other works combined didn't compare to the wonder and glory of that one book, you know? So what else? In essence, I like books that transport me to another world/time/way of thinking. I like to be completely consumed by a fantasy. The best ones follow me around after I put down the book, lingering behind me like a pieces of gauze in the wind, the little scraps settling in my hair when I slow down.
Classics are best, but I like new stuff too. And I'll read non-fiction if the ideas are fascinating enough.
Leave suggestions in the comment section, why don't ya?*
(Rather than through the contact form, you know who you are!)