The edition I read is the movie tie-in which comes with 100 pages of back matter about the making of the film (which. I watched a year or so back - my verdict is that the Zooey Deschanel / Martin Freeman chemistry is the best thing about it). Interesting to find that most of the (pretty radical and thorough) plot changes in the film dated back to Douglas Adams' own adaptation efforts; there is a rather self-deprecating piece by scriptwriter Karey Carmichael explaining that he didn't do much and was sort of filling in time between The Chicken Run and Charlotte's Web. The main cast are also interviewed, and I have to say that Mos Def comes across much better on the page than he did as Ford Prefect on screen.
Top LibraryThing Unsuggestion: Humility: True Greatness by C.J. Mahaney