Dune

THIS WAS AN ABSOLUTELY BRILLIANT READ!

I also think that this book is like a litmus test of sorts - whatever themes you pick up on reflect a lot about you. It has something that appeals to everyone.

Also, fair warning, it is a bit dense for the first 150 or so pages but this is one of those books that you MUST reread, just because it's so much better every time you do so and you find something new every read!