Tyson recommends
The Poisonwood Bible, a book by Barbara Kingsolver. Well, not exactly recommends: "I didn't like it but I thought you might." Also, as she hands Tim a book, Christine says of herself: "Not only am I an avid reader, I'm also a pusher." In fact, we all left with scifi/fantasy books: for me,
Thud! by Terry Pratchett, who I tend to regard as light reading, but enjoyable (if you don't read two of his books in a row).