The Princess Bride by William Goldman (1990, Paperback, Reissue)

This book is an instant classic. When I first read it, I admit I was fooled by the author's foolish antics. That's probably what makes this book so much more than its competitors. The entire novel is kind of like one big practical joke, which causes it to create instant laughs. My advice is to read this book, especially if you loved the movie, because it will be worth it. You'll get a kick out of all the funny details that are completely fabricated.