Joo Janta 200 Super-Chromatic Peril Sensitive Sunglasses.

"Today must be Thursday. I could never get the hang of Thursdays."

- Arthur Dent

"Don't try to out-weird me, three-eyes. I get stranger things than you free with my breakfast cereal"

- Zaphod Beeblebrox

"One is never alone with a rubber duck... Whee!"

- Captain of a race that is the humans ancestors that has been in a bathtub for over four years

"I love deadlines. I like the wooshing sound they make as they go by!"

- Douglas Adams

The primary cast:

Simon Jones - Arthur Dent

Geoffrey McGivern - Ford Prefect

Mark Wing-Davey - Zaphod Beeblebrox

Susan Sheridan - Trillian

Stephen Moore - Marvin

Richard Vernon - Slartibartfast

Peter Jones - "The Book"

The Hitch-Hiker's Guide to the Galaxy is 100% fact in the 42nd dimension.

42.

(see the related question)

It would look like Marvin, and it would taste like angst.

there is none

The Earth was destroyed by Vogons to make way for a hyperspacial express route.

Space

42 is the answer to the meaning of life, the universe & everything..... ( & no, do not take it seriously, it's just a little play on words apropos of nothing !)

Both Sam Rockwell and Alan Rickman. Sam Rockwell was (guest actor) Guy Fleegman in Galaxy Quest (1999), and Zaphod Beeblebrox in The Hitchhiker's Guide to the Galaxy (2005). Alan Rickman was (actor) Alexander Dane in Galaxy Quest and the voice of Marvin the robot in The Hitchhiker's Guide to the Galaxy.

The most massively useful thing an interstellar hitchhiker can have is, of course, a towel.

The voice of Deep Thought in the 2005 film adaptation of "The Hitchhiker's Guide to the Galaxy" was provided by British actor, Helen Mirren.

1. Mice (they have been conducting experiments on us for years and are in fact mysterious pan-dimensional beings) 2. Dolphins (they knew about the destruction of the Earth before it happened and tried to warn us, but eventually gave up and left the planet, leaving behind the message 'So long, and thanks for all the fish') 3. Humans (carbon-based life forms descended from apes, who still think digital watches are a pretty neat idea)

Marvin the robot did not directly cause anyone to commit suicide in "The Hitchhiker's Guide to the Galaxy." However, it is revealed that a high-strung personality like Zaphod Beeblebrox might be negatively impacted by Marvin’s gloomy attitude.

42

Douglas Adams was known to enjoy Earl Grey tea. It is said to have been one of his favorite teas while writing "The Hitchhiker's Guide to the Galaxy" series.

If you mean the scene in book 3 (Life, The Universe and Everything) where Arthur and Ford are on prehistoric Earth with the Golgafrinchans and Arthur tries to find the Ultimate Question by pulling Scrabble tiles at random from a bag, it's because Arthur is actually descended from the Golgafrinchans rather than the early humans, who eventually die out, taking the real question with them. This means that the question 'What do you get if you multiply six by nine?' is, as Ford says, "either the wrong one or a distortion of the right one."

42.

This was the question posed to a super computer, Deep Thought by name, with a brain the size of a planet and after zillions of years of cogitation, the above was the answer given to the question.

42 was the calculated meaning of life

I think it's either Prostetnic Vogon Jeltz or the mice, or possibly both.

In every book, the conflict is different. Basically, it's just Arthur Dent and his attempts to get used to the life outside of his recently blowed up home planet.

It takes place in the "present time." Many believe it to take place in the future, because of the space travel, aliens, etc. However, it is in fact set in the present day.