These authors take you through the 5-book Trilogy (although they mostly focus on the first 3 books) in a series of essays. They are all light hearted, but some of them are more serious that others. It also includes a great interview of Douglas Adams from the 80s.I had a lot of fun with the book and remembering my favorite scenes. The essays also helped me see different interpretations of the actions of the characters. I recommend it for the bookshelf of any H2G2 fan!