I didn't intend to stay up and read So Long, and Thanks for All the Fish nonstop, but that's what I ended up doing.
Like Book Three, Book Four in the Hitchhiker's Guide series lacked a certain connection to the first two, even if the plot directly addressed the most crucial event from Book One (the destruction of Planet Earth). The series kind of mellowed out. Sure, there are still the spaceships and the existential agonies, but Book Four kind of got all weird. For starters, it wasn't as ADHD; it stuck to only one moment in the space/time continuum. The flying was a little out of place (just like Mary Poppins!), as was the quasi-spiritual sentiment (it's a little more sympathetic in this book, in marked contrast to the first two). But on the other hand, Arthur Dent finally scores with a girl! Woo hoo. The Universe, and all its readers, cheered for him.
In a way, I guess, the series grew up in Book Four?
Taken alone, though, the book was good -- as evidence by the fact that I couldn't put it down.
Also, I found it funny that the character known as the Rain God has the same name as Washington State's Attorney General. Hehe. Still cracks me up.