Book #99 is by Kurt Vonnegut. I've never read anything by Mr. Vonnegut before but I do remember seeing a number of his books around my old place in university - my room mate was a philosophy major so I guess he was on his reading list.
I read this book in a few hours while on a plane. It was really good. I like Mr. Vonnegut's writing style - his character development was really unique. This book is worthy of being on this list - I might have even put it higher.
After setting aside book #100, I'm back into this list - onto #98!