Dune is a popular series, but I've not come across many people who've actually read it. It's a really amazing Sci-fi series, if you're into that. Another book, one that I read during Elementary school I believe, was Island of the Blue Dolphins. It's about a Native American girl who was stranded. It's a children's novel, and not actually a series, but that was a book that always stuck with me. Unfortunately, I'm never able to find others who have also read it, and I don't own a copy of it myself. Yet.