Hitchhiker's Guide to the Galaxy

A book never published on Earth, and until a terrible catastrophe occurred in an alternate probability in 1979, never seen or even heard of by any Earthman.
Nevertheless, a wholly remarkable book.
In fact, it was probably the most remarkable book ever to come out of the great publishing corporations of Ursa Minor- of which no Earthman had ever herd either.
No only is it a wholly remarkable book, it is also a highly successful one- more popular than "Celestial Home Care Omnibus," better selling than "Fifty-three More Things to Do in Zero Gravity," and more controversial than Oolon Colluphid's trilogy of philosophical blockbusters, "Where God Went Wrong," "Some More of God's Greatest Mistakes," and "Who Is This God Person Anyway?"
In many of the more relaxed civilizations on the Outer Eastern Rim of the Galaxy, The "Hitchhiker's Guide" has already supplanted the great "Encyclopedia Galactica" as the standard repository of all knowledge and wisdom, for though it has many omissions and contains much that is apocryphal, or at least widely inaccurate, it scores over the older, more pedestrian work in two important respects.

1. It is slightly cheaper.

2. It has the words DON'T PANIC inscribed in large friendly letters on its cover.

1. The original science-fiction comedy. Written by the late Douglas Adams, HGttG incorporated poignant observations about the nature of Life, the Universe and Everything with ridiculous slapstick. It began as a radio show, but was later made into a book trilogy in five parts. The one steadfast rule of the series is that logic and causality are for sissies.

2. A fictional device similar to a PDA which contains an encyclopedic database about everything you could possibly want to know about, written by underpaid or unpaid people not really concerned with accuracy (much like UrbanDictionary). It comes in a box that has the words "DON'T PANIC!" in large, friendly letters.

1. A very popular BBC radio series written by Douglas Adams, originally broadcast in 1978, with new episodes broadcast in 1980, 2004 and 2005.
2. A book released in 1979 by Douglas Adams, derived from the first series of 1. Also the blanket title for a series of four further books by Adams set in the same universe. Sometimes known as “a trilogy in five parts”.
3. 1979 stage show derived from the first series of 1.
4. 1979 LP recording derived from the first series of 1.
5. 1981 BBC television series derived partially from the first series of 1., with some material from 2. and additional original material.
6. A 1984 computer text adventure game by Infocom, freely adapted from the beginning of the first series of 1.
7. A 2005 film from Disney, very loosely derived from the first series of 1. Widely felt to have lost most of the humor and pacing of the original in the process of adapting the material to an American audience. The death of Douglas Adams (and subsequent editing of the script by others) may have played a part in this.

Oh my god what a good book. This is what got me hooked on reading again. Ran across it while cleaning the library. Looked strange so I picked it up and started reading. The book follows the adventures of a British guy named Arthur Dent and his freind from another planet after Earth is demolished by space construction workers.

its my bible.the most genious thing ever written, it pokes fun at humans, their emotions and how they go about life. one of the only humans to actually feature in it is arthur dent, a typical englishman who happened to be good friends with another life form, only finding this out a few minutes before the earth is demolished to create a hyper-space bypass.
after leaving earth, just in time for this to happen, him and his alien friend, ford prefect, set off on an adventure arthur cannot ever quite get the hang of.
the 5 books get surrealer every minute, making the planet earth seem more and more insignificant.
it ponders over life, the universe and everything and even comes up with the most genious answer to everything.
the book also introduces us to one of the best characters in existance, marvin the paranoid android, a robot with the emotions of real people which is usually depression thus creating a depressive robot, coming up with some of the best lines ever written:

best science fiction book ever, part one of The Hitchhiker's Trilogy in Five Parts

The single most quoted book series of UrbanDictionary.com.