How to describe this delightfully absurd science fiction comedy? It's been called a mash-up of <em>Monty Python</em> and Isaac Asimov; Adams himself described the series as "a trilogy in five books." Originally published in 1979, it's both a staple of high school required reading lists and a science fiction classic beloved by readers who don't usually gravitate towards science fiction.

All five books in one volume. This is a great deal.