
The Hitchhiker's Guide to the Galaxy is a comedy science fiction series created by Douglas Adams. Originally a 1978 radio comedy broadcast on BBC Radio 4, it was later adapted to other formats, including stage shows, novels, comic books, a 1981 TV series, a 1984 video game, and 2005 feature film.

And Another Thing... is the sixth and final installment of Douglas Adams' The Hitchhiker's Guide to the Galaxy "trilogy". The book, written by Eoin Colfer was published on the thirtieth anniversary of the first book, 12 October 2009, in hardback. It was published by Penguin Books in the UK and by Hyperion Books in the US. Colfer was given permission to write the book by Adams' widow Jane Belson.

Douglas Adams's Guide to The Hitch-Hiker's Guide to the Galaxy is a BBC Radio production sold as an audio book on two cassette tapes. The programme was partially broadcast by BBC Radio 4 as a 40-minute feature titled The Guide to 20 Years' Hitch-Hiking on 5 March 1998, marking the 20th anniversary of the first radio programme in the Hitchhiker's Guide to the Galaxy series.

The h2g2 website is a British-based collaborative online encyclopedia project. It describes itself as "an unconventional guide to life, the universe, and everything", in the spirit of the fictional publication The Hitchhiker's Guide to the Galaxy from the science fiction comedy series of the same name by Douglas Adams. It was founded by Adams in 1999 and was run by the BBC between 2001 and 2011.

The Hitchhiker's Guide to the Galaxy is a BBC television adaptation of Douglas Adams's The Hitchhiker's Guide to the Galaxy which was broadcast in January and February 1981 on UK television station BBC Two. The adaptation follows the original radio series in 1978 and 1980, the first novel and double LP, in 1979, and the stage shows, in 1979 and 1980, making it the fifth iteration of the guide.

The Hitchhiker's Guide to the Galaxy is a fictional electronic guide book in the multimedia scifi/comedy series of the same name by Douglas Adams. The Guide serves as "the standard repository for all knowledge and wisdom" for many members of the series' galaxy-spanning civilization. Entries from the guidebook are used as comic narration to bridge events and provide background information in every version of the story. The guide is published by "Megadodo Publications", a publishing company on Ursa Minor Beta.

The Hitchhiker's Guide to the Galaxy is a science fiction comedy radio series written by Douglas Adams. It was originally broadcast in the United Kingdom by BBC Radio 4 in 1978, and afterwards the BBC World Service, National Public Radio in the US and CBC Radio in Canada. The series was the first radio comedy programme to be produced in stereo, and was innovative in its use of music and sound effects, winning a number of awards.

The Hitchhiker's Guide to the Galaxy is a 2005 science fiction comedy film directed by Garth Jennings, based upon previous works in the media franchise of the same name, created by Douglas Adams. It stars Sam Rockwell, Mos Def, Zooey Deschanel, Martin Freeman, Bill Nighy, Anna Chancellor, John Malkovich, and the voices of Stephen Fry, Helen Mirren, Thomas Lennon, Richard Griffiths, Ian McNeice, Bill Bailey and Alan Rickman.

The Hitchhiker's Guide to the Galaxy is the first of six books in the Hitchhiker's Guide to the Galaxy comedy science fiction "trilogy" by Douglas Adams. The novel is an adaptation of the first four parts of Adams's radio series of the same name. The novel was first published in London on 12 October 1979. It sold 250,000 copies in the first three months.

Life, the Universe and Everything is the third book in the five-volume Hitchhiker's Guide to the Galaxy science fiction "trilogy" by British writer Douglas Adams. The title refers to the Answer to Life, the Universe, and Everything.

Mostly Harmless is a 1992 novel by Douglas Adams and the fifth book in the Hitchhiker's Guide to the Galaxy series. It is described on the cover of the first editions as "The fifth book in the increasingly inaccurately named Hitchhikers Trilogy". It was the last Hitchhiker's book written by Adams and his final book released in his lifetime.

The Restaurant at the End of the Universe is the second book in the Hitchhiker's Guide to the Galaxy comedy science fiction "trilogy" by Douglas Adams, and is a sequel. It was originally published by Pan Books as a paperback. The book was inspired by the song "Grand Hotel" by British rock band Procol Harum. The book title refers to Milliways, the Restaurant at the End of the Universe, one of the settings of the book.

So Long, and Thanks for All the Fish is the fourth book of the Hitchhiker's Guide to the Galaxy "trilogy" written by Douglas Adams. Its title is the message left by the dolphins when they departed Planet Earth just before it was demolished to make way for a hyperspace bypass, as described in The Hitchhiker's Guide to the Galaxy. The phrase has since been adopted by some science fiction fans as a humorous way to say "goodbye" and a song of the same name was featured in the 2005 film adaptation of The Hitchhiker's Guide to the Galaxy.

Starship Titanic is an adventure game developed by The Digital Village and published by Simon & Schuster Interactive. It was released in April 1998 for Microsoft Windows and in March 1999 for Apple Macintosh. The game takes place on the eponymous starship, which the player is tasked with repairing by locating the missing parts of its control system. The gameplay involves solving puzzles and speaking with the bots inside the ship. The game features a text parser similar to those of text adventure games with which the player can talk with characters.

Towel Day is celebrated every year on 25 May as a tribute to the author Douglas Adams by his fans. On this day, fans openly carry a towel with them, as described in Adams' The Hitchhiker's Guide to the Galaxy, to demonstrate their appreciation for the books and the author. The commemoration was first held 25 May 2001, two weeks after Adams' death on 11 May.

The Hitchhiker's Guide to the Galaxy is an interactive fiction video game based on the comedic science fiction series of the same name. It was designed by series creator Douglas Adams and Infocom's Steve Meretzky, and it was first released in 1984 for the Apple II, Macintosh, Commodore 64, CP/M, MS-DOS, Amiga, Atari 8-bit family, and Atari ST. It is Infocom's fourteenth game.
